If it's not what You are looking for type in the equation solver your own equation and let us solve it.
20d-10d=20
We move all terms to the left:
20d-10d-(20)=0
We add all the numbers together, and all the variables
10d-20=0
We move all terms containing d to the left, all other terms to the right
10d=20
d=20/10
d=2
| 29+9x=506 | | 0.2(2x+1/2)=5(0.5+-2) | | 10t-t-5t+t+2t=7 | | (4x+4)=180 | | 52=-4m-8 | | 5(w+3)=35 | | 9=g/4 | | 3q-3q+5q+q=18 | | 15-3(x+5)=-21+6x | | j/22=18 | | 3y-10=-40 | | (3x-3)=140 | | (x/2)+10=28 | | 1/4x-2x+3=x+2-7 | | 14x+80+6x=180 | | b/29=14 | | 0=4a*(-38,4)-3a | | (2)/(3)b+5=20-b | | -20=16-6x | | 8j-3j-2j=18 | | t-422=19 | | 81-(3/4)x=(1(1/2) | | 85+y=4y-26 | | 14s-6s-2s-6s+2s=4 | | -33+2n=-40 | | 7.1=r/12 | | –3x–2–2x+1= | | 6x-11=10x+2 | | -7b-14=–5b-4b | | 1.2x(x+8.4)=0.3x | | 27-2u=7u | | 4(2x-12)=4x |