If it's not what You are looking for type in the equation solver your own equation and let us solve it.
3+d+2+d=25
We move all terms to the left:
3+d+2+d-(25)=0
We add all the numbers together, and all the variables
2d-20=0
We move all terms containing d to the left, all other terms to the right
2d=20
d=20/2
d=10
| -2v+8=-32 | | 46=y-29 | | x+5=15x=10 | | 131=-w+219 | | 287=50-x | | 12=v-26 | | −6.1+x=−19.3 | | 9x-6=-3x-3 | | 282=-w+184 | | y=512-20 | | 4m−6=18m= | | 3(4k+14)=10k–2(k–7) | | y=-10000+30000 | | 4q-9=1 | | H^2-24h=0 | | 16x-3=-2x+10 | | 17+0.25x=45.50 | | -6u-34=2(u+3) | | 8=4x+90 | | 61.6=7(m+2.6) | | 3(4w+5)=-9 | | 4/7(7x-28)=52 | | 6m-23=31 | | 59-y=173 | | j3+8=10 | | 3(c-13)=-12 | | 6x-1032= | | 16=r-76 | | 3j+8=10 | | 5b+-4=60 | | 48d=2.4. | | 90=x/2+80 |