If it's not what You are looking for type in the equation solver your own equation and let us solve it.
120-5a=3a
We move all terms to the left:
120-5a-(3a)=0
We add all the numbers together, and all the variables
-8a+120=0
We move all terms containing a to the left, all other terms to the right
-8a=-120
a=-120/-8
a=+15
| 180=2x+2 | | 180=70+60+5x | | p/7=-18 | | 3x=2/1/2 | | 3x-12=3-2x-(3x-1 | | 0.14(x+1000)=5,740 | | 180=38+39+x | | (2x-9)+8+15=(x+5)+8+15 | | 5-2.5x=20 | | 98-a=3a | | 9x+13=9x-18 | | -s=6-2s | | +5x=20 | | 85=5y+17 | | 19,80x-3=26,26x+8,24 | | 9x+13=-3x-18 | | -x-8=-4x−23 | | 11x-3=12x+3 | | 4x-(x-1)=3x-1 | | -x-8=−x−8=-4x−23 | | 34x+24=6 | | 1/272=x | | -5p+8=-6 | | 9=9+4g | | 18a-11a=4a-36 | | 6(2n-3)-2(6n+)=10n | | 8(2n+4)=6(9n+7)=1 | | 8x-6x+198=8x+108 | | 2x-68=46 | | 7-I6x=4x-33 | | -2(-7j-8=-39+3j | | 5(9.4z-4.2=120 |