Verified answer

1+7(15-3x)-(2x+48)=-34(5-x)+18(1-2x)

1 + 105 - 21х - 2х - 48 = - 170 + 34х + 18 - 36х

106  - 23х - 48 = - 152 - 2х

-23х + 2х = - 152 - 106 + 48

- 21х = - 210

х = (-210) : (-21)

х = 10