Question

$Resolva \\ as \\ esquaçoes \\ \\ A) 15-3=5b+6 \\ B) 2y+9=10-y \\ C) x.7=1+2x \\ D) \frac{9x-6}{x} = 8-w \\ \\ E) 5(2x-1)+3(x-4)$

Answer 1

A) 15 - 3 = 5b + 6
- 5b = 6 - 15 + 3
- 5b = - 6 .(- 1)
5b = 6
b = 6/5 ou 1,2

B) 2y + 9 = 10 - y
2y + y = 10 - 9
3y = 1
y = 1/3

C) x.7 = 1 + 2x
7x - 2x = 1
5x = 1
x = 1/5 ou 0,2

D) Essa n deu rs

E) 5.(2x - 1) + 3.(x - 4)
10x - 5 + 3x - 12 = 0
13x - 17 = 0
13x = 17
x = 17/13

Espero ter ajudado ^^