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)
X-((1/4)*x) = 90 // - 90
X-((1/4)*x)-90 = 0
X+(-1/4)*x-90 = 0
X-1/4*x-90 = 0 // - X-90
-1/4*x = -(X-90) // : -1/4
x = (-(X-90))/(-1/4)
x = -4*(90-X)
x = -4*(90-X)
| (7x^8)(2x^6)= | | 19+5r=-5(-4-2r)+4 | | 443=86+3p | | 150.00x+1000.00=2200.00 | | 150.00+1000.00x=2200.00 | | 35f=315 | | 150+1000x=2200 | | 3(k+2)=2+4k | | 209-11x+3x=209 | | 12y=-6x+3 | | e/102=8 | | 3w-6w=21 | | 4(a+2)(a+2)+20(a+2)-24=0 | | -2x-4t=1 | | 2x/3-x-4/2=x-13 | | 3n-8+4= | | v-14=-(4v-6) | | (x-2)(4x^2+3x-8)= | | d/5-d-1/10=9/10 | | (w/w-5)-(5w/5w-4) | | 40=-4/7k | | x=-1.5+-3*-25x | | 1/2+5/4x=2/5x-1/10+4 | | -v+4(1+8v)=-22+5v | | -3(6x+7)=105 | | 4/5x4/5 | | x/3-x/2=5/6 | | x=-1.5+-3*.25 | | .19x+.5(x-5)=.01(3x-4) | | 11.6=-1.3(5h-2)+2.5h | | 2/5x+2/5y=6 | | 5(5x-4)=5(x+5) |