If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-9(u-99)=0
We multiply parentheses
-9u+891=0
We move all terms containing u to the left, all other terms to the right
-9u=-891
u=-891/-9
u=+99
| 2(4x/2)=64 | | 6x+2+5x=-31 | | (4y+3)(8+y)=0 | | 7s+9=4s-9 | | 8m=$70 | | -3(x-7)=3x+(-1) | | v+20=7v-82 | | (6.89+14.52)+(-14.52)=x | | –9b+-11=52 | | –9b+–11=52 | | 36+5n=3(n+4) | | 4x-44=3x-24 | | g/6+21=22 | | 6(h-74)=66 | | 2a+14=28 | | 250/9=275/q | | x(x+1)=2162 | | 6(h−74)=66 | | n+-32=12 | | x=10/8 | | 10x+(-1)=-9(x+7) | | h/6+40=44 | | 2.37=0.58+x | | 0=x²+23x-108 | | y+32/8=6 | | 5x-10+3x-3=-3 | | p+1.40.5p=0.1 | | –7x–60=x^2+10x | | x²+23x-108=0 | | 3/28=q/42 | | 5x-10+3x-3=-8 | | .5a=24 |