If it's not what You are looking for type in the equation solver your own equation and let us solve it.
40-c=-20
We move all terms to the left:
40-c-(-20)=0
We add all the numbers together, and all the variables
-1c+60=0
We move all terms containing c to the left, all other terms to the right
-c=-60
c=-60/-1
c=+60
| 3x+1=6x-7 | | 6b-20=-2 | | 0,5x=200 | | -102+4x=68-x | | 4a+40=20 | | 9x+28-2x=77 | | 0,5x•0,5x=200 | | m/7+6=70 | | 193=122-v | | x^2-12x+16=7 | | 16=211-u | | -7+11d=-40 | | x^2-12x+16=-7 | | 42-2v=4v+6 | | 20-c=-5 | | 12a+7=4+5a | | 29=2h-18 | | 1/4*y=-8 | | 3b-30=-3 | | 45x=227,5+2,4x | | 2x-(-4-4x)=-5(2x-4) | | 7x-3=3+5x | | 49n^2-4=0 | | 2.5-4=7-1,5x | | -68+2x=6x+140 | | 3x4=27 | | 10x+6(x-2)=12 | | 2x^-3x-20=x^+34 | | 9=(p+1) | | 12x-3=2x+42 | | 7x-59=3x+53 | | 2(n+20)=21 |