If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-3DD=4
We move all terms to the left:
-3DD-(4)=0
We move all terms containing D to the left, all other terms to the right
-3DD=4
D=4/1
D=4
| 15.22+0.05h=15.72+0.13h | | y^2/9=121 | | 2(5y-4)=62 | | -1-5x^2=-67 | | 7n+7=5n+7 | | 5x+72=8x−24 | | 4(x-6)^2=88 | | 7x−0.15=2x+0.6 | | 18x-44+88-10=180 | | 8y^2-30y+27=2 | | 3.3=10m=6.17 | | 3-a/4=5 | | 6.7-3.1x=-10.66 | | 4(2x=3)+8x=9(x-1)+18 | | 1/2c-4=1 | | 4x-9=7x=12 | | 3.3+10m=6,17 | | 3x+4x+33=180 | | 4x-18=56+2x | | 41.65=8g+3.81 | | (p+2)^2+12=52 | | 3(x=1)=2(x+11) | | 4x=16(x)^(1/2) | | 67-56=x | | 9+5r=r-7 | | (p+2)^2+12=0 | | .25x=-5 | | 24(x+1/2)=90 | | 9a^2-19a+119=8a^2 | | 42/(x)-45/(x-1)+2=0 | | 1/2d+10=3 | | M^2-3m+9=0 |