Question

7(x+8) -5=6(x+8) +15

Answer 1

7(x+8) - 5 = 6(x+8) + 15

7x + 56 - 5 = 6x + 48 + 15

7x + 51 = 6x + 63

7x - 6x = 63 - 51

x = 12

Answer 2

de acordo com o enunciado vem:

7 * (x + 8) - 5 = 6 * (x + 8) + 15

x + 8 = 15 + 5 = 20

x = 20 - 8

valor de x:

x = 12