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)
5/13 = n/39 // - n/39
5/13-(n/39) = 0
5/13-1/39*n = 0 // - 5/13
-1/39*n = -5/13 // : -1/39
n = -5/13/(-1/39)
n = 15
n = 15
| 25/40=n/16 | | (243k^5m^-10)^1/5 | | q+12=30 | | -3(3x+5)-(1+x)=35 | | 1035/4932 | | -11=m-5-4m | | 10/70=n/7 | | 4s+t=2 | | 8/5=n/18 | | (7x^2-2x)(x^2-2+1)= | | -24-46= | | -5+5x=-40 | | 71=4u+15 | | X^2+10x+8=2 | | -7/19x=5 | | 6z+37=7z+33 | | J/8=6 | | -(1/2)=(1/3)v-(9/5) | | P_2=8/11 | | 4x+y=x+36 | | 2(b-6)=4(3b-7) | | 13/10=(1/30)v | | 3(x+2)=2(c-3) | | 4-29/T | | 121.6x+24.4=-41.6 | | 4x+x+36=y | | C(t)=6+.05t | | 4D=4-7 | | 6z+37=3z+33 | | 1/7f-4=1 | | 16x-28=-84 | | -6x-5x=18 |