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)
(4/5)*x-((15/4)*x) = 5/2 // - 5/2
(4/5)*x-((15/4)*x)-(5/2) = 0
(4/5)*x+(-15/4)*x-5/2 = 0
-59/20*x-5/2 = 0 // + 5/2
-59/20*x = 5/2 // : -59/20
x = 5/2/(-59/20)
x = -50/59
x = -50/59
| (y-6)-(y+8)=9y | | 5(x-6)=65 | | (6y-7)-(3y-5)*6=40 | | 10+0.10b=0+0.35b | | -6x-8=-7x+2 | | 8-9x-2=75+7x-15 | | -.4x+.5x+3=2 | | (y-6)-(y-8)=9y | | (2-x)(x+5)=0 | | .4x+.5x+3=2 | | 2x-40+x+x+60=900 | | 3x+12=9x-5(x+1) | | 11x+6y=-18 | | (2x+24)+y=180 | | 1.7=.25x+.1(x+3) | | 10-9x=52 | | x^5+8x^2-9x-72=0 | | x-9=16x+(-15) | | 3x^2y^-2/6Y^3 | | (1/x^2)=0 | | 5+(2E)=(3E)-2 | | 5x+12=x-12 | | 18-2/3x6 | | 10.50=.45(m-5)+2.50 | | 2x-3=70 | | 5x-2y+z=11 | | (tan^2x+1)(cos^2x-1)=-tan^2x | | 2(3x-7)=-2 | | Y=2x/6 | | -10x+3=x-33 | | 10+4x=5x+27 | | 10b+0.10=0+0.35b |