#include <iostream>
#include <cstring>
#include <stdio.h>
#include <cstdlib>

using namespace std;

int n, *k, *kd;
char **s;
double ps, pd;

typedef struct Term {
    int n;
    int side;
    int type;
} Term;

Term termen[256];

void op_term (char *term, Term &termen, int side) {
    termen.n = 0;
    termen.type = -1;
    termen.side = side;

    if (term[1] == 'x') {
        termen.n = 1;

        termen.type = 0;
    } else {
        int i = 1;

        while (term[i] >= '0' && term[i] <= '9') {
            termen.n = termen.n * 10 + (int)(term[i] - '0');
            i++;
        }

        if (term[i] == 'x') {
            termen.type = 0;
        } else termen.type = 1;
    }

    if (term[0] == '-') termen.n = -termen.n;
}

void clr_term (char *term) {
    for (int i = 0; i < 6; i++) {
        term[i] = NULL;
    }
}

void ecuatie (char *ec, int &k, int &kd) {
    char cec[256], *expresie1, *expresie2, term[6];

    clr_term(term);

    strcpy(cec, ec);

    expresie1 = strtok(cec, "=");
    expresie2 = strchr(ec, '=')+1;

    int pos = strlen(expresie1);

    //cout << "Expresie 1:\n";

    for (int i = strlen(expresie1)-1; i >= 0; i--) {
        if (expresie1[i] == '+') {
            strncpy (term, expresie1+i, pos-i);

            cout << term << endl;

            op_term(term, termen[k], 0);
            clr_term(term);

            k++;
            pos = i;
        } else if (expresie1[i] == '-') {
            strncpy (term, expresie1+i, pos-i);

            cout << term << endl;

            op_term(term, termen[k], 0);
            clr_term(term);

            k++;
            pos = i;
        }
    }

    if (expresie1[0] != '-') {
        term[0] = '+';
        strncpy (term+1, expresie1, pos);

        cout << term << "\n\n";

        op_term(term, termen[k], 0);
        k++;
    }

    kd = k;

    pos = strlen(expresie2);

    //cout << "Expresie 2:\n";

    for (int i = strlen(expresie2)-1; i >= 0; i--) {
        if (expresie2[i] == '+') {
            strncpy (term, expresie2+i, pos-i);

            cout << term << endl;

            op_term(term, termen[k], 1);
            clr_term(term);

            k++;
            pos = i;
        } else if (expresie2[i] == '-') {
            strncpy (term, expresie2+i, pos-i);

            cout << term << endl;

            op_term(term, termen[k], 1);
            clr_term(term);

            k++;
            pos = i;
        }
    }

    if (expresie2[0] == '-') {
        strncpy (term, expresie2, pos);
    } else if (expresie2[0] != '-') {
        term[0] = '+';
        strncpy (term+1, expresie2, pos);

        cout << term << "\n\n";

        op_term(term, termen[k], 1);
        k++;
    }
}

int main()
{
    freopen("ecuatii.in", "r", stdin);
    freopen("ecuatii.out", "w", stdout);

    scanf("%d", &n); cin.get();

    //--

    s = (char **) malloc (sizeof(char *) * n);

    for (int i = 0; i < n; i++) {
        s[i] = (char *) malloc (sizeof(char) * 256);
    }

    k = (int *) malloc (sizeof(int) * n);
    kd = (int *) malloc (sizeof(int) * n);

    for (int i = 0; i < n; i++) {
        k[i] = 0; kd[i] = 0;
    }

    //--

    double r;

    for (int i = 0; i < n; i++) {
        cin.getline(s[i], 256);

        ecuatie(s[i], k[i], kd[i]);

        for (int j = 0; j < k[i]; j++) {
            printf ("%d %d %d\n", termen[j].n, termen[j].side, termen[j].type);
        }

        ps = 0, pd = 0;

        printf("\n%d %d\n", ps, pd);

        for (int j = 0; j < kd[i]; j++) {
            if (termen[j].type == 0) {
                ps += termen[j].n;
            } else {
                pd -= termen[j].n;
            }
        }

        for (int j = kd[i]; j < k[i]; j++) {
            if (termen[j].type == 0) {
                ps -= termen[j].n;
            } else {
                pd += termen[j].n;
            }
        }

        printf("%d %d\n", ps, pd);

        if (ps == pd && ps == 0) {
            printf("infinit\n");
        } else {
            if (ps != 0) {
                r = pd/ps;
                printf("%d\n", r);
            } else if (ps == 0) {
                printf("imposibil\n");
            }
        }

        printf("\n");
    }

    return 0;
}