If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
15/13-(2*x) = -8/13 // + -8/13
15/13-(2*x)-(-8/13) = 0
15/13-2*x+8/13 = 0
23/13-2*x = 0 // - 23/13
-2*x = -23/13 // : -2
x = -23/13/(-2)
x = 23/26
x = 23/26
| 60+8r=5(3+r) | | x^2-14x+49=18 | | 10x=7x | | -7(2+7x)=-602 | | (7+3s/4)=2/5 | | 12=3/412 | | 9x-15=16x+8 | | 15x^2=x+2 | | 26+2x=-(6+8x) | | -3(x+1/8-1/2+3/4)=7x | | x-680=0.7x | | g+(-1/-5)=(-3/-10) | | 11+x/3=15 | | 3/8a-14=10 | | g+(-1/-5)=-3/-10 | | -3x+4=-2x | | -5-(15y-1)=2(7y-16)-1y | | 3x+6+2=8 | | z/0.5-5=-12 | | 3(r-1)=5(r-3)+8 | | 3-2b/4=3/2 | | 49+77= | | -(-4+y)=8-5y | | 196x^2=0 | | 10(28+x)=7x | | -(8x-4)+5x=0 | | 28(10+x)=7x | | 3t+5=7 | | (x+8)/-3=6 | | n+(12+n)=84 | | 4/3d=12 | | 64+j^2=2 |