If it's not what You are looking for type in the equation solver your own equation and let us solve it.
c/31=18
We move all terms to the left:
c/31-(18)=0
We multiply all the terms by the denominator
c-18*31=0
We add all the numbers together, and all the variables
c-558=0
We move all terms containing c to the left, all other terms to the right
c=558
| 4x^2+12x=3 | | z+129=857 | | 68=v+8 | | 4(2t)=68 | | s+38=27 | | 3k+3=33=2k | | s-23=17 | | 3.95x+6=2.75x-3 | | 51=-r | | t-1.8=17.2 | | r/3=3.99 | | v+1=19.75 | | 6(3x-x)+4=5 | | 2n=9.74 | | -6-3=4x+7 | | 2x-3=149 | | 6(9)+3y=3 | | 5+r2=30 | | -9+4r=3r-3-5 | | X^2-5x+16=5x-5 | | x+55=x+145 | | X^2-2x-37=7x-1 | | 23x=5+12x | | 0.7(7+2t)=0.4t+1.4 | | 2p+30+50=180 | | -6=5(7+8x)=75x-114x-18 | | -5+5(2x-3)=4 | | 12r-15=23 | | 2x-3x/4=1/8 | | 10x=0.007 | | 7x=2x-13 | | 2.5/2=3/x |