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)
50-((2*x)/2) = 13 // - 13
50-((2*x)/2)-13 = 0
50-x-13 = 0
37-x = 0 // - 37
-x = -37 // * -1
x = 37
x = 37
| (7+6+9+-6-9-2+7)3= | | -7x^2+8x+5=0 | | y/9=21 | | X=7(3.14)j | | -3(-4-7z)=7z | | 10=-16x^2+32x+6 | | B=3.14159265 | | 4x+9=-27-2x | | 19-4x=4x+11 | | 8x+71=3x+121 | | 29/8 | | -18=-8x-9-5x | | 15-2b=-a | | 8m-13=19 | | 1/3xln(18)-1/3xln(16)-1/3xln(1/3) | | z^2-4iz-5=0 | | 4x+9=-27x-2x | | 9x+4=4x-6 | | 4(z+5)=28 | | 3t+4=19-2r | | (x^2)y+(y^2)x=0 | | 2y+3x-1=0 | | 5-2v=7 | | 2x-1+3x+7=x-4+x-4 | | 3x+2x+12-6= | | 2xy+12=14 | | y=4x^2-13x+6 | | .02x+x=15000 | | 25=s | | 7[p-3]=35 | | .02x=15000 | | 20=1/2(m-8) |