Question

a) (2x - 3) + 2 ( x + 1) = 3X + 18

b) 2 ( X + 1 ) - 3 (2x -5) = 6X - 3

c) 2 X 3 ( X - 5) = 34X + 9

As alternativas abaixo


a) X = 19 / b) X = 10 / c) X = 24

a) X = 19 / b) X = 2 / c) X = - 24/29

a) X = -19 / b) X = -2 / c) X = - 24/29

a) X = -19 / b) X = 2 / c) X = 24/29

a) X = 19 / b) X = -10 / c) X = -29

​mim ajuda por favor

Answer 1

Resposta:

a) X = 20

b) X = 2

c) X = -24/29

Explicação passo-a-passo:

a) (2x - 3) + 2 ( x + 1) = 3x + 18

2x - 3 + 2x + 1 = 3x + 18

2x + 2x - 3x = 18 - 1 + 3

x = 20

b) 2 ( x + 1) - 3 ( 2x - 5) = 6x - 3

2x + 2 - 6x + 15 = 6x - 3

2x - 6x - 6x = -3 - 15 - 2

- 10x = - 20

x = -20 / -10

× = 2

c) 2x + 3 ( x - 5) = 34x +9

2x + 3x - 15 = 34x + 9

2x + 3x - 34x = 9 + 15

- 29 = 24

x = - 24/29