If it's not what You are looking for type in the equation solver your own equation and let us solve it.
7-3d=13
We move all terms to the left:
7-3d-(13)=0
We add all the numbers together, and all the variables
-3d-6=0
We move all terms containing d to the left, all other terms to the right
-3d=6
d=6/-3
d=-2
| -3=-1+-2f | | 7+5p-2p=16 | | 32000-749.7x=0 | | 6r-4r=-2 | | 25m-25-16m-8=5 | | 21=m-9 | | -3x+3-7x=-97 | | 3y-1/6=3 | | 0.5p+2.4=-1.1 | | -c-8=10 | | 1-5x-7=-1 | | 7a-4-5=5 | | 36.n=45.8 | | 42n=-7 | | 4p+1=2 | | -7n+6n=7 | | 50=5w | | x+52-7=3 | | g/8=-24 | | -4-5a-2a=-18 | | -2r-1=2r+11 | | 7-5/2(8r-6)=2r=32 | | 8r+7-1=22 | | 2x+4-5x=-20 | | 8r+7-1=20 | | -3w-48=3(w-4) | | 2.5=12.5w=5 | | 52^2=2x-5 | | 36x=45.8 | | 6(u+1)=-2u-34 | | 2a-a+5a-a=-15# | | 18.8.3.8=36n.45.8 |