If it's not what You are looking for type in the equation solver your own equation and let us solve it.
13=4f-8
We move all terms to the left:
13-(4f-8)=0
We get rid of parentheses
-4f+8+13=0
We add all the numbers together, and all the variables
-4f+21=0
We move all terms containing f to the left, all other terms to the right
-4f=-21
f=-21/-4
f=5+1/4
| p-33=-13 | | 5/6-2/3t=3/4 | | 70-7x=700 | | 18×a=54 | | 0.1x+0.05=2.1 | | 5=4/w-7 | | 2z-3=3-4 | | z+23=17 | | 6v+30=8v+44 | | 4(x+2)+x+1=2x-3+3(x-4)) | | y/2+13=36 | | -2+6h=10-3 | | x2-2(-3+3)x+9+3=0 | | 18j-3=2 | | 4-20x=0 | | 8k-19=30 | | -4-20x=0 | | 4-4m-12+m2+3=0 | | -5-20x=0 | | 2x+4/2=6x+2/2 | | 2x/2+4=6x/2+2 | | 2x-45=155 | | 2c-56=204 | | u-5/6=-1/5 | | 3y-6÷7=3 | | 34=4n | | -5(x+2)=38+x* | | 3/4x-1/2=1/3(3/4x+6)-7/2 | | -3+3p=15 | | 7x+1=-11+8x-5x | | 4-15x=0 | | X-8/9=x |