Question

PRECISO ENTREGAR HOJE ALGUEM ME AJUDA POR FAVOR ​

Answer 1

Resposta:

Respostas abaixo:

Explicação passo-a-passo:

a) 2x + 6 = x + 18, 2x - x = 18 - 6, x = 12

b) 5x - 3 = 2x + 9, 5x - 2x = 9 + 3, 3x = 12, x = 12/3, x = 4

c) 3(2x - 3) + 2(x + 1) = 3x + 18, 6x - 9 + 2x + 2 = 3x + 18, 6x + 2x - 3x = 18 + 9 - 2, 5x = 25, x = 25/5, x = 5

d) 2x + 3(x - 5) = 4x + 9, 2x + 3x - 15 = 4x + 9, 5x - 4x = 9 + 15, x = 24

e) 2(x + 1) - 3(2x - 5) = 6x - 3, 2x + 2 -6x + 15 = 6x - 3, -4x -6x = -20, x = -20/-6

f) 3x - 5 = x - 2, 3x -x = -2 + 5, 2x = 3, x = 3/2

g) x - (2x - 1) = 23, x -2x + 1 = 23, -x = 23 -1, -x = 22, x = -22

h) 2x - (x - 1) = 5 - (x - 3), 2x -x + 1 = 5 -x + 3, 2x -x + x = 5 + 3 -1, 2x = 7, x = 7/2