Question

a) 5x + 3 = 8

b) 2 + 4 = 3x + 12 - 7

c) 2x – 5 = 25

d) x + 2x = 186

e) 7x + 9 -2 = 5x - 10 + 5

por favor me ajude​

Answer 1

Resposta:

a) 1  b)1/3  c) 15  d)62  e) -6

Explicação passo-a-passo:

A) 5x + 3 = 8 -> 5x = 8 - 3 -> x = 5/5 -> x = 1

B) 2 + 4 = 3x + 12 - 7 -> 13 -12 = 3x -> 1 = 3x -> x= 1/3

C) 2x - 5 = 25 -> 2x = 30 -> x = 15

D) x + 2x = 186 -> 3x = 186 -> x = 186/3 -> x = 62

E) 7x + 9 - 2 = 5x -10 +5 -> 2x = -10 + 5 - 9 + 2 -> 2x = -12 -> x = -12/2 -> -6