Question

a) 5x - 5 = 2x + 10
b) - 5x = 120
c) 3x + 16 = x - 2​

Answer 1

Resposta:

a) x = 5

b) x = -24

c) x = -9

Explicação passo-a-passo:

a)

$5x-5=2x+10\\5x-5+5-2x=2x-2x+5+10\\3x=15\\\frac{3x}{3}=\frac{15}{3} \\x = 5$

b)

$-5x = 120 \\5x = -120\\x = -24$

c)

$3x+16=x-2\\2x=-18\\x=-9$