-9,5 - 7.5 2,2
Пошаговое объяснение:
1) 4(3x+5)-3(4x-1) =12+26x
12x + 20 - 12x+3=12+26x
26x=11
x=
2) 16-(2x+5) =30
16 - 2x - 5 = 30
-2x = 19
x = -9,5
3) 5-(2x+3) =17
5 - 2x - 3 = 17
-2x=15
x= - 7.5
4) 3(x-1)-2(1-x) =6
3x - 3 -2 + 2x = 6
5x = 11
x= 2,2