Question

a) 4x+4=12= b)15-5x-4x=18 c)12x-10x-4=3 d)7x-2-5x=18​

Answer 1

Explicação passo-a-passo:

a)

4x+4=12

4x=12-4

4x=8

x=8/4

x=2

b)

15-5x-4x=18

-9x=18-15

-9x=3

x=3/-9

x=(3÷3)/(-9÷3)

x=- 1/3

c)

12x-10x-4=3

2x= 3+4

2x=7

x=7/2

d)

7x-2-5x=18

7x-5x=18+2

2x=20

x=20/2

x=10