If it's not what You are looking for type in the equation solver your own equation and let us solve it.
990=15q
We move all terms to the left:
990-(15q)=0
We move all terms containing q to the left, all other terms to the right
-15q=-990
q=-990/-15
q=+66
| 11-x=5-x | | 55+y=9*9 | | x+13=8x-57 | | 2(h-4)+5h=41 | | 3x-12=-2x-42 | | 25d=75 | | 8.5-3r=8r | | -2(x-3)=1/2(-4x+12) | | 10=d/11 | | p+40=8p-86 | | (11-x)-5=1 | | 8p-98=p | | 10d=180 | | 8p-98=98 | | 9-6x=445 | | f-30=84 | | 2(x-5)+4=5x-2 | | 11+2x=2x+4 | | u/7=26 | | 5x+58=7x+30 | | 25=-5k;k=5 | | 2x+16.5=4+7.5x | | -2(w+2)=6w-2+2(2w+7) | | 12r=-288 | | 5(2x−3)=20x+15 | | 64=9v-64 | | 4(x+1)-x=3x+4 | | 1/3=a+7 | | 10x=85+8x+5 | | 10=m/21 | | 3(x-3)=5x+11 | | n2=-86 |