If it's not what You are looking for type in the equation solver your own equation and let us solve it.
b in (-oo:+oo)
b/13-((6*b)/13) = 10/13 // - 10/13
b/13-((6*b)/13)-(10/13) = 0
b/13+(-6/13)*b-10/13 = 0
-5/13*b-10/13 = 0 // + 10/13
-5/13*b = 10/13 // : -5/13
b = 10/13/(-5/13)
b = -2
b = -2
| -96=j-481 | | 8(3x+-5)+20=68 | | -4(r+5)=-49 | | 2x-9y-7x+7y= | | 13x+52=2 | | 52+13x=2 | | r/33-12=-11 | | x^2-8x+30= | | 35+-5(2x+3)=20 | | Y+-25=761 | | 16=7x+1-4x | | 10x+-3(8+-5x)=-74 | | 2(x+6)+3(2x+1)=3x+25 | | 5x-4+2x+10=36 | | 34xp=1 | | 28=6x+1-3x | | 4(X-2)+11=3(2X-2)+8 | | 7.1=9.5-0.4x | | 4(-14+5)= | | -1.33+2.66=x | | 2500+100*x-1=1800+120*x-1 | | -1.33+2.66= | | 0.27=m/84.32+24.00-m/100.09 | | 10x-4y=15+0 | | 3.4+10m=7.53 | | x^2-4x-5=m | | k-6/5=11 | | 1=9/x^2 | | 4(-4x-4)+8(2+5x)=(64+25x) | | 14+2(16-3)=40 | | k-9/5=12 | | (20-r)^1/2=r |