If it's not what You are looking for type in the equation solver your own equation and let us solve it.
d+255=8
We move all terms to the left:
d+255-(8)=0
We add all the numbers together, and all the variables
d+247=0
We move all terms containing d to the left, all other terms to the right
d=-247
| 22-2x=44 | | 7x-17+42+78=180 | | 7+x/5=-1 | | 22+4a=3a-3 | | 9y+9=13y-11 | | -(x+-1)+-0.2=3.8 | | 6=3(n-8) | | 5x-18+23=180 | | 2(p-5)=10 | | 6x+11+46+106=180 | | z+6/24=1 | | 10-2v=-50-5v | | 43+(2x+1)=180 | | 8x-17=19x+4=5x+1 | | 17r-16r=2 | | 7(w-8)=-90 | | 4/3x−2=4 | | 4x2-25=9 | | 5x-2x=-2-7 | | 4x-4-8x-18-58=180 | | (8x-10)+12=90 | | 9x2-8=1 | | (8x-10)+00=90 | | 9u-3u+1=19 | | -5+x2=14 | | x+5=x-72 | | 32=x/10+12 | | 6x-2+6x-2+40=180 | | -x+14=-8x-56 | | 1+-2x=4x+12 | | 5x2-500=0 | | 5+2x=24 |