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)
3*x-(1/2) = 13 // - 13
3*x-(1/2)-13 = 0
3*x-1/2-13 = 0
3*x-27/2 = 0 // + 27/2
3*x = 27/2 // : 3
x = 27/2/3
x = 9/2
x = 9/2
| 140-v=218 | | 7/x+3/4=5/x | | 5x^3+2x^2-80x+32=0 | | 9x+6=36+4x | | 3-5z=3z-13 | | -x+205=105 | | 10x+8=28 | | x-8+2x+14=0 | | x-2=3+x | | (3x^2-24x+18)/(x-7) | | 0.7+y=-13.4 | | (6x+8)(8x-6)=0 | | 3m-1=m | | 2/6=p/9 | | 3x-15+18= | | y-y=1 | | -/-4/= | | 8(3m+6)+8(9m+4)= | | 152-4x=32x+16 | | 3[a+18]=9 | | 6-7x=35-14x | | 30x^4-x^2-20=0 | | 70-3x=15x+24 | | 6/-/-6/= | | 1/3(10x-6)=3 | | -6-6x-(4x)+12=116 | | 2x(3x-1)=0 | | 3*7+7-7= | | 5/4=c/13 | | 6u^2-5u+1=0 | | s/3=7/10 | | 10x-3=35 |