If it's not what You are looking for type in the equation solver your own equation and let us solve it.
30=d+9d
We move all terms to the left:
30-(d+9d)=0
We add all the numbers together, and all the variables
-(+10d)+30=0
We get rid of parentheses
-10d+30=0
We move all terms containing d to the left, all other terms to the right
-10d=-30
d=-30/-10
d=+3
| (P-1)=-(-6-4p) | | -7n=6n-3 | | t/5+6=12 | | 4d+13=29 | | -3=u/4-1 | | G(x)=2x/44 | | 4+0.35x=9+.15x | | -6p-1=65 | | 26+b=45 | | 2x+5=6x+14 | | 3(1−2x)=14(6x+9 | | 5z+38=z+46 | | 4x−3=−11 | | -5(3x-19)=2(x-16)-43 | | -5(2x-4)=20 | | -99=9(q-1) | | 8(n-3)-10n=6 | | 4x+5-2x=-17 | | 2x+100-20=300 | | -5-3=n+10n | | -8a-5=27 | | 3(b+2)-7=2b-5+b | | 2(x+50=4x+4 | | -p/2-14=-20 | | 8-4/7x=6 | | -58=-7x+5 | | x(x-14)=-50 | | 2.75+x=4.03 | | -15=s-12 | | 12x+3+11x-9=180 | | 9/x=6/x-4 | | 2k+17=73 |