Question

encontre o valor do x

5. (4x + 2) = 8 + 2(x – 1)

-2 (x -3) = x + 5

2⋅(x−4)+x−4=57

3(10−2x)=−2(x​

Answer 1

Resposta:

a)

5. (4x + 2) = 8 + 2(x – 1)

20x+10=8+2x-2

18x=-4

x=-4/18

=-2/9

b)

-2 (x -3) = x + 5

-2x+6=x+5

1=3x

x=1/3

c)

2⋅(x−4)+x−4=57

2x-8+x-4=57

3x=57+4+8

x=69/3

x=23

d)  

Está incompleta

3(10−2x)=−2(x​