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 = 3/8 // - 3/8
3-x-(3/8) = 0
3-x-3/8 = 0
21/8-x = 0 // - 21/8
-x = -21/8 // * -1
x = 21/8
x = 21/8
| 1x+7y=109 | | .4x-x=x-x-30 | | 4x^3+19x^2+48x+27=0 | | 5/2x+1/4x=3/4+0 | | 8f+24=10f | | 3(5c-4)= | | 0.9-2.1+0.9=0.2(5-x) | | 2+4x=2x+6 | | 50+7x=134 | | 7(2)=10+.50r | | x+4x+130=180 | | 6-3e=24 | | 3(x-1)=5(3x-2) | | 2p^2+2p-4=y | | 0=6x^2-14x+8 | | 8x-10+10+4x=-10+6x+6x+10 | | x+4x=130+(x+4x) | | 6p-5(-9-7)= | | 3x^2-18x-2=0 | | 0.9c-2.1+0.9=0.2(5-x) | | 2+6(x+3)=5-2(3x+1)+1 | | 4t^2+31+42=0 | | 2f(6)=3x+4 | | (x^2+y^2)dx+(x^2-2xy)dy=0 | | 6x+11(2)=31 | | -15x+24+16x=3x-24-3x | | 3t-6=4 | | 2-(4+2)=3y | | 4+7x=4x+28 | | 0.6=4/x | | (-1)(48)=-48 | | Lnx=1.3 |