Question

ajutor.Se considera numerele a,b si c.
a)daca a+b=5 si c=3,calculati ac+bc.
b)daca a-b=6 si c=4,calculati ac-bc
c)daca c=2 si ac-bc=10,calculati a-b.
ajutor va rog.

Answer 1

a)a×c+b×c=c×(a+b)=3×5=15
b)a×c-b×c=c×(a-b)=4×6=24
a×c-b×c=c×(a-b)=10
2×(a-b)=10
a-b=10:2=5