Question

E) 4x + 6 = 12 + 2 • x
F) -2x + 1 = -5x - 20
G) 3/2 X + 2 = 80
H) 9/5 • x = 9
I) 3x-1/4 = 2

Answer 1

Resposta:

• E) 4x + 6 = 12 + 2x

4x - 2x = 12 - 6

2x = 6

x = 3

• F) -2x + 1 = -5x - 20

-2x + 5x = -20 - 1

3x = -21

x = -7

• H) 9/5 • x = 9

9x = 45

x = 5

• I) 3x - 1/4 = 2

4.3x - 1/4 = 4.2

12x - 1 = 8

12x = 9

x = 9/12 ÷3

x = 3/4