Question

12x -11=8x+5
9-3x=2(x+22)
2(4x-6)=5(x+3)
0,3(4x-1)+2,3=1,1x-27

Answer 1

1) 12x - 11 = 8x + 5
12x - 8x = 5 + 11
4x = 16
x = 4

2) 9 - 3x = 2(x+22)
9 - 3x = 2x + 44
2x + 3x = 9 - 44
5x = -35
x = -7

3) 2(4x-6) = 5(x+3)
8x-12 = 5x + 15
8x - 5x = 15 + 12
3x = 27
x = 9

4) 0.3(4x-1)+2.3=1.1x-27
1.2x-0.3+2.3=1.1x-27
1.2x-1.1x=-27+0.3-2.3
0.1x=-29
x=-290