Question

DETERMINE O VALOR DO X:

A)4x-10=2x+2
B)4x-7=8x-2
C)2x+1=4x-7
D)9x+9+3x=15

(tem que ser com operação)​

Answer 1

Resposta:

$a)4x - 10 = 2x + 2 \\ 4x - 2x = 2 + 10 \\ 2x = 12 \\ x = 12/2 \\ x = 6$

$b)4x - 7 = 8x - 2 \\ 4x - 8x = - 2 + 7 \\ - 4x = 5 \\ x = 5/ - 4 \\ x = - 1,25$

$c)2x + 1 = 4x - 7 \\ 2x - 4x = - 7 - 1 \\ - 2x = - 8 \\ x = - 8/ - 2 \\ x = 4$

$d)9x + 9 + 3x = 15 \\ 9x + 3x = 15 - 9 \\ 12x = 6 \\ x = </strong><strong>1</strong><strong>/</strong><strong>2</strong><strong>$

• Espero ter ajudado .

Answer 2

Resposta:

Explicação passo-a-passo:

A)4x-10=2x+2

4x-2x = 2+10

2x = 12

x = 12/2

x = 6

B)4x-7=8x-2

-7 + 2 = 8x - 4x

- 5 = 4x

4x = - 5

x = - 5/4

C)2x+1=4x-7

1+7 = 4x - 2x

8 = 2x

2x = 8

x = 8/2

x = 4

D)9x+9+3x=15

12x = 15 - 9

12x = 6 (:6)

2x = 1

x = 1/2