Question

3(x+2)+5=x+12 qual o resultado?

Answer 1

Olá,

3(x+2)+5 = x+12
3(x+2) = x+12-5
3(x+2) = x+7
3·(x)+3·(2) = x+7
3x+6 = x+7
3x-x = 7-6
2x = 1
x = 1/2

Resposta:

x = 1/2

Answer 2

3.(x + 2) + 5 = x + 12

3x + 6 + 5 = x + 12
3x + 11 = x + 12
3x - x = 12 - 11
2x = 1
x = 1/2