Question

5(х-3)-2(х-7)+7(2х+6)=7

Answer 1

5х - 15 -2х +14 +14х + 42 =7
17 х = 7 +15 -14 -42
17 х = -34
х = -2

Answer 2

5(х-3)-2(х-7)+7(2х+6)=7
5х-15-2х+14+14х+42=7
5х-2х+14х=7+15-42-14
17х=-34
х=-34:17
х=-2