#include <iostream>

using namespace std;

void solver(float x){
    cout << "Answer (y) is ";
    if(x > 7){
        cout << 1 / (x - 7) << endl;
    }
    else{
        cout << -3*x + 9 << endl;
    }
}

int main()
{
    float x;
    cout << "Solver for function" << endl;
    cout << "       −3𝑥 + 9 (when) x ≤ 7" << endl;
    cout << "f(x) = " << endl;
    cout << "        1 / (x - 7)" << endl;
    cout << "Enter your x: ";
    cin >> x;
    solver(x);

    return 0;
}