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)
(3/4)*x+75 = x // - x
(3/4)*x-x+75 = 0
75-1/4*x = 0 // - 75
-1/4*x = -75 // : -1/4
x = -75/(-1/4)
x = 300
x = 300
| 3x=7x+28 | | (4/2x-3) | | 4x^3+4x^2-25x=25 | | 6x+1=2x+7 | | (1/5)2 | | 5[x-2]=20 | | x^2-1.5x+.5=0 | | x^2+.5x+.25=0 | | 5a+7=2a-9 | | 2(y)-y=5 | | 6x-10=4x+16 | | 34(15-2)-6/3-3 | | Y=x+z-2xz | | (w+8)(w-6)= | | (9t^2-t-2)(6t^2+9t-1)=0 | | x^2+3x+5=-2 | | (9t^2-t-2)(6t^2+9t-1)= | | Y=5+3*10 | | 7y+5=3y+9 | | 4x+5=4+2x+23 | | xsquare=20 | | 0.3x-0.9(20-5x)=-0.4(x-7) | | 11-2x=(-x+1)*5 | | x=17-4(x-2) | | 2/3(5x+4)=4(2-2x)+6 | | 5m-12=38 | | -4x-7=2x+17 | | Y=A+BX | | 12d=33+d | | 2x^2-9x-87=0 | | 9x^2+10x-19=0 | | 111-y=180 |