👤

afla numarul necunoscut a) 128x34-a=975 b)308x17-b=2878 c) c-256x34=398

Răspuns :

a) -a=975-4352
     a=3377
b) -b=2878-5236
     b=2358
c) c=398 +8704
    c=9102
a)128×34-a=975
4352-a=957
a=4352-957
a=3395
b)308×17-b=2878
5236-b=2878
b=5236-2878
b=2358
c)c-256×34=398
c-8704=398
c=8704+398
c=9102