If it's not what You are looking for type in the equation solver your own equation and let us solve it.
129-y=285
We move all terms to the left:
129-y-(285)=0
We add all the numbers together, and all the variables
-1y-156=0
We move all terms containing y to the left, all other terms to the right
-y=156
y=156/-1
y=-156
| -12=-3x+9 | | -0.3x+8.7x=42 | | 3x2+9x+17=03 | | -6.5+5.5(1+2f)=26.5 | | 1/4x-1/8x=4 | | 9-6h=-63 | | 8x+55=5x-7 | | Y=3.6(x) | | 80=4(y-64) | | 9x-25=x-104 | | 13=x/3-16 | | 1000x=5000 | | 14+n=30 | | 2(3x–5)=2x+6 | | 5.8=3u+1.15 | | 4n−11=9 | | 7x+7=2x-2 | | x+55=35 | | 5x2-9x-3=0 | | 77-2t=-1 | | 10x-30=15=5x | | 4x-2/3=5x+1/4 | | a/6-(-32)=42 | | –5z+6=–4z | | w+8=21 | | -3(4x+-6)=30 | | 20x+33=-7 | | 3+18=(9x3)-6 | | 100x=15000 | | 6b-13=25 | | d/6+6=-2 | | 5(x-6)-(5x+6)=6(4x+3) |