Question

3(7х+5)=7(3х-2)+10х

Answer 1

21x+15=21x-14+10x
21x-21x-10x=-14-15
-10x=-29 *(-1)
10x=29
x=29/10
x=2,9

Answer 2

3*(7х+5)=7*(3х-2)+10х
21х+15=21х-14+10х
21х-21х-10х=-15-14
-10х=29
х=29/10
= 2 9/10