Question

1+7*(15-3х)-(2х+48)= -34(5-х)+18*(1-2Х)

Answer 1

1+7*(15-3х)-(2х+48) =  -34(5-х)+18*(1-2х)
1 +105 - 21х - 2х - 48 = -170 +34х + 18 - 36х
-23х - 34х + 36х = -170 + 18 - 106 + 48
-21х = -210
     х = -210 : (-21)
     х = 10

Ответ: {10}