Question

5(x +1) + 6(x + 2) = 9(x + 3) 

Answer 1

5x+5+6×+12=9x+27
5x+6x-9x=27-5-12
2×=120
x= 10/2
x=5

Answer 2

Olá,

Vamos lá,

5(x +1) + 6(x + 2) = 9(x + 3) 
5x + 5 + 6x + 12 = 9x + 27
5x + 6x - 9x = 27 - 5 -12
11x - 9x= 27 - 17
2x = 10
x =10/2
x = 5

Resposta: x=5