If it's not what You are looking for type in the equation solver your own equation and let us solve it.
15a-80=4a-7
We move all terms to the left:
15a-80-(4a-7)=0
We get rid of parentheses
15a-4a+7-80=0
We add all the numbers together, and all the variables
11a-73=0
We move all terms containing a to the left, all other terms to the right
11a=73
a=73/11
a=6+7/11
| 2+4x=x+2 | | -2.1-6x=2.5 | | 5(3a)-80=2(2a-7) | | 9(x-2)+2=9x-16 | | -6x-(2x+3)=1 | | 3r2=4r-1 | | x+53=4x+2 | | 25c+0.45=40c+0.25 | | -5(2x-7)=2(x-11)-15 | | -x+2=x+(-3x)+(-5) | | .5(x-50)=3+4x | | v2=17 | | 5+3x=2(-x+4)-18 | | 9×m=0.117 | | 6x^2=-17x | | 3(b+4)+8=–3 | | 6x+18=4x+9 | | 22.00+3.50h=11.00+4.75h | | 2x+10=4×-50 | | 9k=29 | | 5x+18=x+45 | | 5y+31=360 | | 3x+-6+1=2x+-5+5x | | 10x+36=1/2(x+45) | | -1/2=-6/18n | | k3=5 | | 7q-11=13+4q | | 5x-(2x-30)=90 | | 6x-9x=-54 | | k3=2 | | 10+9c=12c-5 | | 3a/2-8=2a-7/5 |