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)
6 = (2/5)*x // - (2/5)*x
6-((2/5)*x) = 0
(-2/5)*x+6 = 0
6-2/5*x = 0 // - 6
-2/5*x = -6 // : -2/5
x = -6/(-2/5)
x = 15
x = 15
| 9(x-5)+7=9x+3 | | -3/10-2/5x=1/5 | | (5+x)(3+x)=48 | | -(8-2)+5x-6=-4 | | 10y^3-2y^2=0 | | 3(-3-6v)=99 | | x=169+-200 | | -(8x-2)+5-6=-4 | | 34+8m=-7(1-7) | | 7y^2-2y^2=44y+7y | | 5246=165x-2771 | | 5/8y-3=12 | | -8+y=-6 | | 5x+4=9x+20 | | 5(x+3)+4x-5=(2x-4) | | 5[y+2]-3[y-1]=-27 | | c=qh | | 1/3-2x=3 | | (sqrt(9-5x))/(7/(5x-7)) | | 3(4x+1)=9-5(94x-3) | | 41-x=[-1]-7x | | 3z^5/z^7 | | g(4x)=x^2-4x | | 24+3x+x=60 | | 200/10×/5 | | 4r-4(r-4)+r=37 | | 4r-4(r-4)+2=37 | | 5x-2(3x-9)=5(2x-9)+8x | | 6x-3=6+5x | | 3x+2x-12=-7x | | 5/2(−4y) | | 6(z-72)=9(z-99) |