stind ca a×b-a×c=1440 si a=45,calculati b-c.

Răspuns :

a×b-a×c=1440

a × (b - c) = 1440

45 × (b - c) = 1440

b - c = 1440 : 45

b - c = 32

a(b-c)=1440
45(b-c)=1440
b-c=32