If it's not what You are looking for type in the equation solver your own equation and let us solve it.
40-3c=4
We move all terms to the left:
40-3c-(4)=0
We add all the numbers together, and all the variables
-3c+36=0
We move all terms containing c to the left, all other terms to the right
-3c=-36
c=-36/-3
c=+12
| 4(3/4x+28)+5x=23 | | 28x^2-17x-3=0 | | 4(x-29)-4=4x-120 | | 5(2n-1)=10n-5 | | k+2/3=2 | | 4(3/4+28)+5x=23 | | 4p+3=2(2p+1) | | |-3(x+2)|=1 | | 3=z+3/2 | | 0.05(378-x)+0.07x=36 | | 40=3000/12×r | | 3=6-k | | √(x)-2/x-4=0 | | 2(x^2+1.5x+1.125)=0 | | 5k^2=20-72=0 | | 3=2(2p+1) | | 2=n+2/2 | | d+1/3=2 | | 15.x^2=81/169 | | -3(x-10)=7x+15 | | 9-(4-8x)=4x+2 | | |x|+20=13 | | 11x^2+3x-3=3 | | 2x-7/4+x=2x+7/2+3 | | 5x/8=x/3+8 | | 400=10^x | | 6w-27=54 | | 220-12.5(x-6)=470 | | 2x+3(-x+38)=102 | | 5x^2-26x+14=0 | | x-3/4=2x-1/8 | | 2(x-2)^2=18 |