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)
7/9 = f/18 // - f/18
7/9-(f/18) = 0
7/9-1/18*f = 0 // - 7/9
-1/18*f = -7/9 // : -1/18
f = -7/9/(-1/18)
f = 14
f = 14
| 3x+18=9x+10 | | 3n^2-18n-1=0 | | 3.2x+4(x+0.7)=38.7 | | 6(7k-2)=20-9k | | 3=5x+13 | | 8n+-12=5n | | 8n-12=8n | | 5-6x=27 | | 8x-(6x-5)= | | 8.5+-.5y-z=7 | | q/-9.5=-2.1 | | (5*x^2)+12=0 | | 67m=-314 | | 7-x*2+x=1*2 | | 800=3(x-6)(2.5x-6) | | c=WM | | q//-9.5=-2.1 | | -19=9(6f+2) | | 5n/5 | | 2(b+4)+7=27+5b | | Y=2.5-3 | | 600=3(x-6)(2.5x-6) | | 10+5r=-60 | | 8-9=3x-4-2x | | (X+9)=4 | | X^2+628-50x=0 | | 9k=157 | | 5t-16+4=6t-42 | | 4x+-1y=35 | | P=3t+b | | 6n+3=12n-15 | | 36-14y+-21=13 |