If it's not what You are looking for type in the equation solver your own equation and let us solve it.
4f-9=11
We move all terms to the left:
4f-9-(11)=0
We add all the numbers together, and all the variables
4f-20=0
We move all terms containing f to the left, all other terms to the right
4f=20
f=20/4
f=5
| x(x+40)+30=180 | | x20+x40+X30=180 | | 15=p/2+12 | | -7(-7x-4)=-6x | | 0x+9=1x+3 | | 2n−5=1 | | (x-7)=(x^2-6x+3) | | 5a-2a+8a+16=71 | | 6^x+2=12 | | 3z−3=3 | | 6=78/x | | -6x+7+8x=-2 | | -4x(x-5)=8(x+2) | | H(20)=x-6 | | 8x+7=31 | | 8x-2=-46 | | n4+ 12= 19 | | 0x+5=1x+2 | | 4(4x-3)=14x+7 | | 3/4d-1/2=2.5 | | 63+q=84 | | 4v2+16v=65 | | -3u+2=(-10u+30) | | 4v2+16v=25 | | 15h-4=4 | | 10/15=x/25 | | 79=k/8+70 | | 6x+10=8x+30 | | 4^2x=395 | | 5000=200/(0.1-x) | | 94=v/9+85 | | 5x-4(x-8)=-11 |