Question

Qual o valor de x?
Agradeço desde já quem responder​

Answer 1

Resposta:

Explicação passo-a-passo:

4x+3=-5

4x=-5-3

4x=-8

X=-8/4

X=-2

8x-5=18

8x=23

X=23/8

Answer 2

Resposta:

A) -2

B) $x=\frac{23}{8}$

Explicação passo-a-passo:

A

$\frac{4x+3}{5}=-1\\\\\frac{5\left(4x+3\right)}{5}=5\left(-1\right)\\\\4x+3=-5\\\\4x+3-3=-5-3\\\\4x=-8\\\\\frac{4x}{4}=\frac{-8}{4}\\\\x=-2$

B

$\frac{8x-5}{2}=9\\\\\frac{2\left(8x-5\right)}{2}=9\cdot \:2\\\\8x-5=18\\\\8x-5+5=18+5\\\\8x=23\\\\\frac{8x}{8}=\frac{23}{8}\\\\x=\frac{23}{8}$