Question

5. Calcule A + B, sendo: a) A=2x+7 e B= 4x-5 b) A=10x+2.(4-x) e B=2.(x-4) c) A=4v-2 e B=-10V+6​

Answer 1

Resposta:

a)A+B= 2x + 7 + 4x - 5

6x - 2

2(x - 1)

b) 10x + 2(4-x) + 2(x - 4)

10x + 8 - 2x +2x - 8

10x

c) 4v - 2 - 10v + 6

- 6v + 4

-2( 3v - 2)