If it's not what You are looking for type in the equation solver your own equation and let us solve it.
f in (-oo:+oo)
4 = f/5-16 // - f/5-16
4-(f/5)+16 = 0
20-1/5*f = 0 // - 20
-1/5*f = -20 // : -1/5
f = -20/(-1/5)
f = 100
f = 100
| 1.9z+6=3.1-z | | -16b=-48 | | 1.9z+6=3 | | a+b+c=72 | | 7p^2-3p=-11p-1 | | 2n-28=-63+7n | | 4z-30+2z=18 | | 9/2x=-54 | | 10x+3=8x+21 | | [h+4]=19 | | .9=k+.7 | | 45-5x=180 | | 11=18+4f | | 30x+42=28x-70 | | -1/2+4x+x=109/2 | | 9^(1/3) | | 3x+5=8x+5 | | 1.5x-1=-x+4.5 | | 4(w+2x)+9(-4w)= | | .04-2.7=11.7 | | 5000+500(x/100)=10x | | 3x-8(2x+3)=6(2x+5) | | 4x+(5/8)=5x-(5/8) | | 3w+11=6-2w | | -5+3b= | | 7n-26=-20+4n | | 2r-3=3 | | h+(-7)=29 | | -6x^3+10x^2+(-4)6x^3+(-5x^2)+(-9x)= | | 4/5x-11=-3 | | 13=5.4+40 | | 5+10*5+8= |