If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-q=-690
We move all terms to the left:
-q-(-690)=0
We add all the numbers together, and all the variables
-1q+690=0
We move all terms containing q to the left, all other terms to the right
-q=-690
q=-690/-1
q=+690
| f/3+12=16 | | -670=-10q | | -30t=-840 | | 8m+60=964 | | 8=f+17/3 | | 23t=-299 | | p+14=-967 | | -30k=-390 | | n/3+18=20 | | b-421=159 | | 12=3d-3 | | 1/8x+x=72 | | -770=11d | | 28=6+5(k+7) | | 27c=486 | | 28=6+5(k+7 | | 240=m-691 | | 52–0.3x^2=-2x+16 | | 17=5k02 | | 70=5q | | 6q=90 | | 4x^2+1.5x+13.62=0 | | 24-7n=-32+n | | 3(3n-24)=54 | | 10x-40=20x-20* | | -0.75y-2=0.25y | | p2+9p=0 | | n+888=2999 | | 8=2w-10 | | 1x=47,x | | C(x)=9.00+0.10x | | 7n=2=4n=17 |