A/ X-4=(32+x)-(2x+28). x-4=32+x-2x+28
X+x-2x=32+28+4. 2x-2x=64.
0≠64
B/. 9x-8x+(16+2x)=5(2-x).
9x-8x+16+2x=10-5x. 9x-8x+2x+5x=10-16
1x+7x=(-6). 8x=(-6)/:8.
X=(-6)/8
C/. 7+3x=4(0,75x+7). 7+3x=3x+28
3x-3x=35.
0≠35
D/. (x/3-x/2=3-x/4)/*12. 4x-6x=36-3x
4x-6x+3x=36. -2x+3x=36. 1x=36
X=36
