If it's not what You are looking for type in the equation solver your own equation and let us solve it.
d+4d=15
We move all terms to the left:
d+4d-(15)=0
We add all the numbers together, and all the variables
5d-15=0
We move all terms containing d to the left, all other terms to the right
5d=15
d=15/5
d=3
| 8=j-7 | | 12r-84=96 | | z9+2=−59 | | 14w=7w+42 | | z/9+2=−59 | | 32-3x=5x-18-4x | | 2c+4c=6 | | 32=p+7 | | 2x-7=7x+10 | | 1x2=3x=6 | | 5y+14=-61 | | 9x-4x+50=-45+120 | | 90x-30x=48 | | Y=3x+163 | | -2+2v=-8 | | (n/1.4)−2.9=−5.11 | | 12x–15=5x+6 | | 2x+3(x-5)=4x-8 | | 2x-(x-2()5+x))+12+8=0 | | 15/x*100=3.91 | | 100=x+(x/2) | | 11-3x=75-(-1) | | 20-7x+15=-20-2x | | 7x+1=8x-4 | | 81=h-9 | | 2x+25-x=30 | | 4x+16=x-11 | | -37x=111 | | 4x-20=7x+5x+10 | | 5(x+1)+2(5x+3)=45 | | 5x+7x-3=3(4x+7) | | 3(x−7)=3x+21 |