If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-6f+5=-8f-9
We move all terms to the left:
-6f+5-(-8f-9)=0
We get rid of parentheses
-6f+8f+9+5=0
We add all the numbers together, and all the variables
2f+14=0
We move all terms containing f to the left, all other terms to the right
2f=-14
f=-14/2
f=-7
| 2-11x=3x-12 | | 8x^2+12=-28x | | 2-5c=-9c+10 | | a+2/4+2a-3/6=a+3/3 | | Y+11+8y-6=-40 | | -18-7f=-6f | | N+4(n+9=)+20 | | -5b-9=-9-5b | | 11x+18+20x+7=180 | | -6/u=-9 | | 5r2-8=39r | | z-16=7 | | -n+4=-2n+10 | | -z/3–8=-7 | | 3/4+x=13/8 | | -z3–8=-7 | | 3x+21=12x+15 | | 4(x-8)=48 | | 6x+10+130-2x=180 | | -10+8m=6m+8 | | -d+4=16+4d-1 | | 20=6x=14 | | 3u-17=31 | | 9x+6-4x=46 | | -8k-7=-8k | | x-9/2=5 | | X=1,625y | | 7c+9=c-31 | | 3x-9=x+35 | | 6m+36=-31 | | 4x+13=-3x-19 | | -8=18=c |