17-2(Х+3)+5(Х-7)-3(2x+1) =-28
17 - 2Х -6 + 5Х - 35 - 6Х -3 = -28
-2Х +5Х -6Х = -28 -17 +35 + 3
-3Х = 3
Х = -1
17-2(Х+3)+5(Х-7)-3(2x+1) =-28
17 - 2Х -6 + 5Х - 35 - 6Х -3 = -28
-2Х +5Х -6Х = -28 -17 +35 + 3
-3Х = 3
Х = -1