5.9x-5.21=9.54
5.9x-14.75=0
x=14.75/5.9
x=2.5
(0.95x-1.82):1.7=3.4
0.95x-1.82=3.4*1.7
0.95x-1.82-5.78=0
0.95x-7.6=0
x=7.6/0.95
x=8
