If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-3a-3=15
We move all terms to the left:
-3a-3-(15)=0
We add all the numbers together, and all the variables
-3a-18=0
We move all terms containing a to the left, all other terms to the right
-3a=18
a=18/-3
a=-6
| 175m-100m+42,750=45,255-150m | | 2x-(1+3-6=12 | | (8x−18)=(2x+8)+(3x+16) | | x/3-3=x/9=+ | | (-16-2b=6b)/2=b | | 5x+2=8x-71 | | 10x-15°=2x+15° | | 6x+-8=-4x=7 | | 10.2=2n-3 | | -4(2p+5)=3(6p-11) | | 4.7=2.3-0.5y | | x+5x+4x-18=108 | | 2x7=140 | | 5x(x=6 | | 2×3m=4 | | 3(8x+8)=-21+56 | | 3y=2+4 | | |4x-1|=|31-4x| | | x=114+3x | | 4(x−2)−3x=−11 | | (x+10)(x+30)=180 | | 5(2a-3)=3-a=13 | | 5x=+12=3x+-8 | | m=4(3,14) | | –6s–8=–14 | | 76+6x-2+34=180 | | f+(-10)=10 | | v/18+18=19 | | 5=2/5x+6 | | 2s+6=7s+3 | | f+(-8)=10 | | 6/7×e=12 |