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u+7u=0
We add all the numbers together, and all the variables
8u=0
u=0/8
u=0
| 8x–16=40 | | 2x+2=–12 | | –x–4=2 | | x+6=–1 | | 8x+2/3=2/3 | | b−15=1 | | 11=d−9 | | n=12=10n | | 9n-6n+3=18 | | 9n-3+2n-1=18 | | 27-12-2x=96-x | | -2+6x=2x-5 | | 7-9+6x=2x-5 | | 3x(2x=40) | | 7-9-6x=2x-5 | | 8*1y=8*11y | | 5y-4=5+4y-12 | | (1,5x+5)^2=0 | | 3x-4=5+2x-x | | (6y-24)=(101+y) | | 5x²+10=30 | | 10y+5=2y+12 | | 10r²+5r-60=0 | | 9x-8=-15-4x | | 5y-4=5+4*y-3 | | 8*2-4*y-1=8*2y+9 | | |3x|=10 | | 1.8÷8=3÷(5x+7) | | (76+y)=180 | | e-5=3e+9 | | -4y-6=8+3y | | m+0.7=3m=0.9 |