If it's not what You are looking for type in the equation solver your own equation and let us solve it.
20c=-100
We move all terms to the left:
20c-(-100)=0
We add all the numbers together, and all the variables
20c+100=0
We move all terms containing c to the left, all other terms to the right
20c=-100
c=-100/20
c=-5
| X+42=7x7 | | 4/3v-3=-3/2v-1/4 | | 1/4(-8x+14)=-6 | | 3y+2(y-5)=35 | | -2y+5(y+2)=7 | | 1.6=r(16) | | 1/2m-4=5. | | -32=-7+f | | ^x=0.008 | | 7(w-4)-2w=-38 | | 2x+5x=-10+23 | | a+7=-15 | | -24=8(v+2)-4v | | -3/5w-2/3=3w+7/5 | | 66=-6r | | 10x^2+2=492 | | -4(-5u+5)-4u=4(u-4)-6 | | 3(x+5)=140 | | 20+17v=-6+v | | 10)-(5x-5)+5=-20 | | Y=2/3x+12 | | 7x+14=14-7x | | 4/9=3/k+1 | | -5w-12=-2(w-9) | | 25+11/12x=27 | | 24=3/n | | 2w+5(w-3)=-29 | | 0.2x=10x | | 24=3x8 | | 2x-13=2x+7 | | C/2-y=16 | | 1134=6(17+x) |