Răspunsuri

2014-10-19T15:05:43+03:00
4322-3202+2134=3254   am facut de la spate spre fata cu operatii inverse

a-2134+3202=4322
a=3254
inlocuieste a si verifica 
2014-10-19T15:06:33+03:00
A-2134=b+3202=4322;
b=4322-3202, b=1120;
a=2134+b,
a=2134+1120,
a=3254.
atunci 3254-2134=1120, 1120+3202=4322.