If it's not what You are looking for type in the equation solver your own equation and let us solve it.
31f=899
We move all terms to the left:
31f-(899)=0
We move all terms containing f to the left, all other terms to the right
31f=899
f=899/31
f=29
| 3(2x-1)-10=8 | | -2(x+6)=-22+3x | | g/5+48=56 | | 2.5b+2b=5.12 | | 18=3(p-3) | | 3/x+1=8/x−4 | | 9a/3=64 | | 12/2x-1=-4/3 | | 3r+10=55 | | b+2.25=-1.25 | | 0.13y=30 | | m/4-(-2.8)=5.91 | | 2x×5x=1000 | | 3|4x-8|=24 | | 15=-5x-35 | | 3(x+6)=(4x+7) | | 6x-3(1+5x)=-8(x-4)+4 | | 25=34+50+x4 | | (3x-17)°=(25-3 | | 12x-15=32x+3) | | 0.5x+30=0.05x+20 | | 6x=10x+4=20x-4 | | 6w+32=-46 | | y-328=21 | | 10=(w/6)+5 | | 4=7-n/6 | | −7(5x−9)+12=4x | | 12x-37=9x+5=180 | | -9-11y=-12 | | 10=(w/6) | | /9-4x=17 | | 1/2x=-25 |