If it's not what You are looking for type in the equation solver your own equation and let us solve it.
21=-5+2(d+3
We move all terms to the left:
21-(-5+2(d+3)=0
| 8-3d=-3d+5 | | (1/3x)+x=4.8 | | -10k+7=-2-7k | | 5(2x-9)^2=210 | | 39x+34=424 | | 12y^2+32y+5=0 | | 2x^2+5x+25=50 | | 4/6p-5/6=71/6 | | 2p+9=4p-7 | | 12y^+32y+5=0 | | 2g+1=1+2g | | -24=-8(3h-4) | | -18.9=-1.4+x/7 | | 8v+2=8v+9 | | 61+x+5=6x | | 2x/5+7/10=1/2 | | -5x=6x+3+7x | | 61-6x=x+5 | | -2x/3-7=21 | | r+12-2r=-9-4r | | -16=20-3p | | 16-x/x=3/x | | 43=3-6y | | -1-9q=-9q+1 | | 20=x/3-22 | | -9n-2-5n=7-14n-14 | | 3=3-14a | | 4x+6+90+90=180 | | -7r+2=-7r-6 | | 90+6+4x+90=180 | | 3x+8=12+3x-x | | -19+m=6 |