If it's not what You are looking for type in the equation solver your own equation and let us solve it.
9d=-405
We move all terms to the left:
9d-(-405)=0
We add all the numbers together, and all the variables
9d+405=0
We move all terms containing d to the left, all other terms to the right
9d=-405
d=-405/9
d=-45
| (2^x)=100 | | 6x+11=7x-20 | | 3(d-7)+2=8 | | 3(s+2)-s=34 | | 7x+32+x=180 | | 160-x=180 | | 2(2m+7)=−28−6m | | k/6.6+90.1=18.2 | | 10x^=60 | | 2/7=3/4x | | (2x-3)/6=2x/3+12 | | -2(2m+7)=−28−6m | | 3/4+1/5x=4 | | 6x+11=6x-29 | | 30=9y-6y | | 10-15h=35 | | 3q²-20q+45=0 | | 8u+4=−12 | | 2x^2–5x+2=0 | | 3x^2–5x+2=x^2 | | 85=5(7+2x) | | x^-21=0 | | (2x-4)-(6x=6) | | -2m=-1.8 | | 2/3n=1/6 | | 2v+v=6 | | 70x+63x+102x+x=180 | | (5+e)*17=510 | | k6.6+90.1=18.2 | | 13h=130 | | 35+90+y=180 | | -85+7x=15x+147 |