If it's not what You are looking for type in the equation solver your own equation and let us solve it.
3a+12=4a-15
We move all terms to the left:
3a+12-(4a-15)=0
We get rid of parentheses
3a-4a+15+12=0
We add all the numbers together, and all the variables
-1a+27=0
We move all terms containing a to the left, all other terms to the right
-a=-27
a=-27/-1
a=+27
| -8=-1(1x=4) | | 48-9c=-3c | | 6t=88+5t | | 6t=88+5t | | -5(x-1)-x+1=1-18 | | 24+6x=-7-(-28) | | 26x+57=83x-2 | | -9x=9/17-20x | | 1/8-5=6x+12(x=-2.894) | | (5x-17)=13 | | k/14=12 | | -x-4-4=-3 | | -2.81=-2.9+0.1c | | 17+h=-10 | | 3x+3=−2x−17 | | 1/4(6x-16)+0.75x=-31 | | r+3=37 | | -4x-12=3x | | -2c-11=-8c | | 5^5x-12=125 | | 1.5y-2.75=0.25y-16 | | 5y-3(4y-2)=-15 | | r-12=81 | | -4x=-396 | | 6x−5=4x−23 | | 121^5x=11^12x+2 | | A+5b=9 | | 798=(1450)(x)/3.5 | | 1.1x-4.5x=5 | | 64^3x-16=8^10x | | 2^4x=32^x+1 | | 3.5+x=10.8 |