Question

A)3(x-1)=2x+4
B)22=2x+12
C)2(3x+4)=16
D)x/2=12/3

Answer 1

$a)3x - 3 = 2x + 4 \\ 3x - 2x = 4 + 3 \\ x = 7$

$b) - 2x = 12 - 22 \\ - 2x = - 10 \\ x = 5$

$c)3x + 4 = 8 \\ 3x = 8 - 4 \\ 3x = 4 \\ x = \frac{4}{3}$

$d) \frac{x}{2} = 4 \\ x = 8$

Espero ter ajudado!

Answer 2

Oi...

a)

3(x -1) = 2x + 4

3x - 3 = 2x + 4

3x - 2x = 4 +3

x = 7

b)

22 = 2x + 12

- 2x = 12 - 22

- 2x = - 10 ( - 1)

2x = 10

x = 10/2

x = 5

c)

2(3x + 4) = 16

6x + 8 = 16

6x = 16 - 8

6x = 8

x = 8/6 ÷ 2

x = 4/3

d)

x/2 = 12/3

3x = 24

x = 24/3

x = 8

boas liçoes.