If it's not what You are looking for type in the equation solver your own equation and let us solve it.
3a+9a+36=180
We move all terms to the left:
3a+9a+36-(180)=0
We add all the numbers together, and all the variables
12a-144=0
We move all terms containing a to the left, all other terms to the right
12a=144
a=144/12
a=12
| 5+6x=131 | | -15=-3+3(2+x) | | -3=3x-42 | | 5(5x+4)=29 | | -2d-52d=-9 | | ¼x-3=4 | | 3x-12=5x-1-2x* | | 3x-1+3x-1=2x+6 | | 6v=-4+10 | | 3y-7+157=180 | | 44+60+4x+8=180 | | 11+3p-7=6p+5=3p | | 7+v/4=7 | | 9n-18=10n | | 9y+3(y-6)=20 | | 3x+6=6(x+-1)-3x | | 24=-3(2-x)+2x | | -19=9k+10k | | 2(2x+2)=9.2x.2 | | (6x-15)(8+x)=168 | | 47-6x=11+12x | | -3(x+6)=-4-5x | | 3(3v-10)=6 | | x+9=-12 | | 4+4x=4x-x-3 | | 6x+7=13+18-1x | | 40=-8x+12x | | 3x+6=(x+-3)-3x | | 9^3x-2=81 | | 4x=22+12 | | 3(3x=2)+1=13 | | 700x-150=1150 |