Question

află nr necunoscut.308×17-b=878
c-256×34=398​

Answer 1

Răspuns:

Salutare!

308×17-b=878

5 236-b=878

b=5 236-878

b=4 358

v:307×17-4 358=5 236-4 358=878

c-256×34=398

c-8 704=398

c=398+8 704

c=9 102

v:9 102-256×34=9102-8704=398

#Succes!