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afla valoarea lui x prin metoda mersului invers. 125+x-3210=10700, x-125+574=14302,294800-x+58=125000+75000, 478206+x-10+1000=470000.

Răspuns :

125+x-3210=10700
125+x=10700+3210
125+x=13910
 x=13910-125
x=13785   



x-125+574=14302
x=14302-574+125
x=13853