2(z-7)-3(5-2z)=(4z+5)
2z-14-15+6z-(4z+5)=0
2z-29+6z-(4z+5)=0
8z-29-(4z+5)=0
8z-29-4z-5=0
4z-29-5=0
4z-34=0
z=34/4z=8.5(300*8.5)/100=25.5
2z-14-15+6z=4z+5
2z+6z-4z=5+14+15
4z=34
Z=34/4
Z=8,5
Z=8,5*300%=2550%
2(z-7)-3(5-2z)=(4z+5)
2z-14-15+6z-(4z+5)=0
2z-29+6z-(4z+5)=0
8z-29-(4z+5)=0
8z-29-4z-5=0
4z-29-5=0
4z-34=0
z=34/4
z=8.5
(300*8.5)/100=25.5