Помогите пж (х+9)-7= 7

Question

Помогите пж (х+9)-7= 7

Answer 1

-7(x+9)=7
-7x-63=7
-7x=7+63
-7x=70
x=-10

Answer 2

(x + 9) - 7=7
x + 9 = 7+7
x = 14 - 9
x = 5