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)
1/5-(x/2) = 13/10 // - 13/10
1/5-(x/2)-(13/10) = 0
1/5-(x/2)-13/10 = 0
-1/2*x-11/10 = 0 // + 11/10
-1/2*x = 11/10 // : -1/2
x = 11/10/(-1/2)
x = -11/5
x = -11/5
| 135/2p=6 | | 3/2x=1/4x-1/x^2 | | (2x-3)(5x+2)=ax^2+bx+c | | 9(6+8x)=-26 | | 3x+3y+80=180 | | -3(x-4)=1 | | 3(x-2)+(4y-5)=-12 | | 29=-9+8(9-2) | | 2w-6=2 | | -9(8x)=15 | | (1/8)^(1/3) | | X(0.2)+X=90 | | (10x+5)=(9x+5) | | 142=11x+17y | | 12y+4x=8 | | -34=v+-5v | | -15x-4(-4x+6)-23+2x=-9-7(5x-6)-8x | | y=x^2-6x+40 | | n^2+n=739 | | 6x^3+13x^2-4=9 | | 12x-2x+58=12x+34 | | 6x^3+13x^2=9 | | 20s=-7+19s | | 0.7(4x-7)=-2 | | -20+9h=-3h+12+10h | | 4x+38=7x+8 | | H/4=5 | | 8x+6x-69=92-9x | | -12-11z=8-10z | | 3sinx+7=0.5cosx | | X^2-14x+48=48 | | 8=(2x+10)(2x+8) |