Question

9-(5+7х)=11 решите уравнение

Answer 1

9 - (5 + 7х) = 11

9 - 5 - 7х = 11

4 - 7х = 11

-7х = 11 - 4

-7х = 7

х = 7/-7

х = -1

Answer 2

9-(5+7x)=11

9-5+7x=11

7x=9-5+11

7x=15

x=15:7

x= -1