If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-4c+40=12
We move all terms to the left:
-4c+40-(12)=0
We add all the numbers together, and all the variables
-4c+28=0
We move all terms containing c to the left, all other terms to the right
-4c=-28
c=-28/-4
c=+7
| x+25+2x-4=117 | | 5t²=1.5t | | x+25=2x-4 | | 2x+5=x+x+7 | | 5(x-11)=x-43 | | 2x-10=-4x+14 | | 8(x-7)-7(-6+2x)=16 | | 6+1c=5 | | 7^3x-2=5 | | 2^(x-3)*5^(x+1)=62.5 | | 9x-2=6x-3 | | 2x+3x=38 | | 8(x+5)+3=-5(x-1)-4 | | -12+-6z=6 | | 11^2-x=0 | | -10n+2n-16n+19n+-11n=-16 | | 8f-24=-8 | | -20+10x=5(-2x-4) | | 9q-5q+q+4q-8q=16 | | 1.2x+7=21 | | 13^(x+3)+4=81 | | (4x-6)(9x+7)=0 | | 2=1.5^x | | 5n-4n+4n-5n+n=13 | | -10s+-20=-10 | | 18w-6w-6w=12 | | 4.5d+6-8d=29.5 | | -7d-28=7 | | f2-11f+24=0 | | 10,6x+45.000=16,3x | | 5a+19=3a+7 | | 15y+3=180 |