Question

9-Sendo A=3x-y, B=2x+1 e C=4x-y,então,quanto vale A+B-C?

Answer 1

A = 3x - y
B = 2x + 1
C = 4x - y

= A + B - C
= 3x - y + 2x + 1 - (4x - y)
= 3x - y + 2x + 1 - 4x + y
= 5x - y + 1 - 4x + y
= 5x - 4y - y + y + 1
= x + 1

Answer 2

Resposta:

resposta letra c confia