Question

Помогите быстрее! 5х-2(7+5х)=-4х-10

Answer 1

5х-2(7+5х)=-4х-10
5х-14-10х=-4х-10
5х-10х+4х=14-10
-х=4
х=-4

Answer 2

5x-14-10x=-4x-10
5x-10x+4x=-10+14
-x=4
x=4