If it's not what You are looking for type in the equation solver your own equation and let us solve it.
505=f-66
We move all terms to the left:
505-(f-66)=0
We get rid of parentheses
-f+66+505=0
We add all the numbers together, and all the variables
-1f+571=0
We move all terms containing f to the left, all other terms to the right
-f=-571
f=-571/-1
f=+571
| -30=22+6y | | 4(a+5)-2(2a+1)=18 | | 100-20x=70-25x | | –1+8k=–9+10k | | 15n+2n-15n=6 | | F=1.8(k-273.15)+15 | | 4(x+3)=-x-6+3x | | -8f=-5f-3 | | 19=-27-2x | | z/4+7=9-z/7 | | 12x+7=12x-10 | | z+293=777 | | x−11=−12−(−6) | | 7v+43+102=180 | | 22.5x=247.5 | | -8x-18=22 | | 9y+5=6y-18 | | -4u-18u+19u+12u=-14 | | –5a−–18a=–13 | | 100+20x=70+25x | | 7/9x=43 | | 4(c+3)+3=7c | | –p+–18p=19 | | -3y-11=7y+19 | | k/21=25 | | 3x+-2=3+4x | | -14x-155=-12x+19 | | 5x+11x-2=4(4x+9) | | 1/2(-44+12x)=34+2x | | 24-3x-6=-2 | | 6-h/9=9 | | 4x-10-58=180 |