If it's not what You are looking for type in the equation solver your own equation and let us solve it.
N in (-oo:+oo)
20/12 = N/9 // - N/9
20/12-(N/9) = 0
5/3-1/9*N = 0 // - 5/3
-1/9*N = -5/3 // : -1/9
N = -5/3/(-1/9)
N = 15
N = 15
| 222=2(x)+2(53) | | z+6=9 | | 4+12=16x-3-15x | | 7/8+f=-1/4 | | -w/6--2=1 | | 3x=10x-6 | | -w/4--9=5 | | d/7=28 | | 6+3x=11+8x | | 2x+7=-17 | | -3w--9=12 | | 51-2(7x+2)=19 | | f-1.64=3.77 | | 6(t-2)+6t=4(3t+3)-10 | | 36c=1800 | | 7-(8-6x)=2x-4 | | W/2+14=16 | | 9x^2-36+37=0 | | 3/4k-(k+1/4)=1/16(k+4) | | -4w-12=4 | | 12w+-12=0 | | -2+6x=6 | | -2w+20=-4 | | -8w+-16=-32 | | -3w+-18=0 | | 4x+9(x-5)=72 | | 12=a+b | | Z/3-2=-6 | | X^2+36=-6 | | 10x-8=3x+11 | | 2/7x-1/3=x+3/5 | | 4m+5=39 |