If it's not what You are looking for type in the equation solver your own equation and let us solve it.
13a=12a
We move all terms to the left:
13a-(12a)=0
We add all the numbers together, and all the variables
a=0
| 2^x-18x+81=5 | | -6-3x=-4x+6 | | 5/12x-2/3=2+3/4x | | 7x+4/5=8x+3/5 | | b=35-2 | | 5x-7=23-3x | | 5-(2x/3)=1 | | 1/2(6x+10)+x=9x+5(1–x) | | 4(2y+1)=2(12-y£ | | 1x+1=3x+7 | | X(x-6)=120×126 | | (x+35)=−7 | | (3x/5)+4=6,4 | | 7+3x-2+7+3x=2=133 | | 1x+127=120 | | 20-6x2=20 | | -8-4y=-5y | | 2y+10=-3y28 | | C=50.75-0.20x | | 6=2q+4 | | x/5-8=33 | | 12x/5-7=17 | | -3(4x-2)+7x=16-(9-5x) | | 7b+15=8 | | 4|3t+8|=16t | | 6x+4-3x=2 | | 204=31-x | | 3=-1/5m-1 | | 9+6k=10(8-7k) | | (5x-1)/3-6=4x+2 | | 0.04x-1.6=-0.8 | | 9+4x=9x |