int solveEquation(List *lp){
  int identifiercounter,auxcounter,freeterms;
  identifiercounter=0;
  auxcounter=0;
  freeterms=0;
  while((*lp)->t.symbol != '='){
    if(((*lp)->t).symbol == '-'){
      *lp = (*lp)->next;                              // 3 x - 3 x + 3 - 3 + x - x
      if((*lp)->tt == Number){
        auxcounter=(*lp)->t.number;
        *lp = (*lp)->next;
        if((*lp)->tt == Identifier){
          identifiercounter=identifiercounter-auxcounter;
          auxcounter=0;
        } else {
          freeterms=freeterms-auxcounter;
          auxcounter=0;
        }
      } else if((*lp)->tt == Identifier){
          identifiercounter=identifiercounter-1;
      }
    } else if ((*lp)->tt == Number ){
      auxcounter=(*lp)->t.number;
      *lp = (*lp)->next;
      if((*lp)->tt == Identifier){
        identifiercounter=identifiercounter+auxcounter;
        auxcounter=0;
        *lp = (*lp)->next;
      } else {
        freeterms=freeterms+auxcounter;
        auxcounter=0;
      }

    } else if ( (*lp)->tt == Identifier) {
      identifiercounter=identifiercounter+1;
      *lp = (*lp)->next;
    } else if ( ((*lp)->t).symbol == '+' ){
      *lp = (*lp)->next;
    }

  } // end brace for while

  while(*lp!=NULL){

  }
}