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8z/4=0
We multiply all the terms by the denominator
8z=0
z=0/8
z=0
| -78=-42-a | | x/2-4/5+x/5=3x/10=1/5 | | 10y-6y-11=49.68 | | 8y-5y-11=38.77 | | 7y-5y-6=16.54 | | B={x|7x-1=13} | | (-4)x=260 | | 7y-5y-9=15.82 | | 2x2+16x-70=-4 | | 12y-7y-15=72.45 | | 12y-9y-6=27.18 | | 12y-9y-7=38.96 | | 10y-6y=67.12 | | 11y-6y-12=56.40 | | 10y-8y-12=11.86 | | 12y-9y-5=43.42 | | 9y-4y-15=47.85 | | 7y-4y-14=25.03 | | -95=l+-58 | | 8y-3y-8=66.15 | | 15y-10y-4=86.20 | | 8y-3y-4=51.45 | | 15y-10y-4=74.95 | | 11y-8y-7=49.97 | | 12y-9y-14=40.03 | | 8y-3y-4=92.05 | | 14y-9y-6=47.45 | | 10y-8y-10=21.38 | | X+15y=65 | | 14y-9y-8=65.40 | | 12y-7y-10=44.70 | | 5688=23x2+19x-12 |