Question

Resolva as seguintes equações a) 2× + 5 - 5× = - 1 b) 5 + 6× = 5× + 2 c) × + 2× - 1 - 3 = × d) -3× + 10 = 2× + 8 + 1 e) 5× - 5 + × = 9 + ×

Answer 1

Explicação passo-a-passo:

A) 2x + 5 - 5x = -1

2x - 5x = -1 - 5

-3x = -6

x = -6 ÷ -3 = +2,,

B) 5 + 6x = 5x + 2

6x - 5x = +2 - 5

x = -3,,

C) x + 2x - 1 - 3 = x

x + 2x - x = +1 + 3

2x = 4

x = 4 ÷ 2 = 2,,

D) -3x + 10 = 2x + 8 + 1

-3x - 2x = + 8 + 1 - 10

-5x = -1

x = -5 ÷ -1 = 0.2,,

E) 5x - 5 + x = 9 + x

5x + x - x = 9 + 5

6x - x = 14

5x = 14

x = 14 ÷ 5 = 2.8,,