Question

A)7x-2-5x=18 B)12x-10x-4=3 C)-x-2x-4=11 D) 8x=5x+4.5​

Answer 1

Explicação passo-a-passo:

A)

7x - 5x = 18 + 2

2x = 20

x = 20 ÷ 2

× = 10

B)

12x - 10x = 3 + 4

2x = 7

x = 2/7

C)

-x - 2x = 11 + 4

-3x = 15

-x = 15 ÷ 3

-x = 5

x = -5

D)

8x - 5x = 4.5

3x = 20

x = 20/3