Răspuns :
A:
5(x-4)+17=2x+12
5x-20+17=2x+12
5x-3=2x+12
3x=15
X=5
B:
5/6-x=1/2(5/6-x)+1/3
5x/6=5/12-1/2x+1/3
10x=9-6x
16x=9
X=9/16
5(x-4)+17=2x+12
5x-20+17=2x+12
5x-3=2x+12
3x=15
X=5
B:
5/6-x=1/2(5/6-x)+1/3
5x/6=5/12-1/2x+1/3
10x=9-6x
16x=9
X=9/16