If it's not what You are looking for type in the equation solver your own equation and let us solve it.
83=f+15
We move all terms to the left:
83-(f+15)=0
We get rid of parentheses
-f-15+83=0
We add all the numbers together, and all the variables
-1f+68=0
We move all terms containing f to the left, all other terms to the right
-f=-68
f=-68/-1
f=+68
| 20x+15=115 | | 3.1e=27.2 | | y+82=96 | | r-1/9=5/18 | | –2j+–1=–9 | | 2.5x+x=35 | | -6=s/23 | | 3x-6x-8=9x+7 | | c+13=94 | | x+50+x+140=180 | | 0.75x+3=6(x-3)= | | 6=g-31 | | j3+1=2 | | b+3=90 | | 36+2x=24+x | | j3+ 1=2 | | -1/7x/(1/7)=5/(1/7) | | 8b-5=280 | | -1/3x+33=30 | | 201=j+-127 | | b+22/4=9 | | 200m-100m+52525=55550-175m | | g+28=43 | | (x+6)2=80 | | 2b+3=3b+1 | | 5(i+5)=10 | | 6x+9=18-3x | | 2x+.50=120 | | 920=y+5 | | 3n+12*4.5=n+14 | | 2j=498 | | 3c−4=5 |