Question

Х + (х+15) + (х-12) = 129.

Answer 1

Х+х+15+х-12=129
3х=126
х=42

Answer 2

3x=126
X=42....…........

Answer 3

To solve the equation Х + (х+15) + (х-12) = 129, you need to simplify and combine like terms on the left side:

Х + (х+15) + (х-12) = 129 3х + 3 = 129 3х = 126 х = 42

Therefore, the solution to the equation is х = 42.