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)
(2/7)*x = (4/9)*(3/10)*y // - (4/9)*(3/10)*y
(2/7)*x-((4/9)*(3/10)*y) = 0
(2/7)*x+(-2/15)*y = 0
2/7*x-2/15*y = 0 // + -2/15*y
2/7*x = -(-2/15*y) // : 2/7
x = (-(-2/15*y))/2/7
x = 7/15*y
x = 7/15*y
| x^2+y^2-2x+2y=23 | | -2(a-4)=-3a+3 | | 6m^(1/3) | | 2x^2-2x+3x-6=0 | | 6x-7x=2x+41 | | -4-14=-2(3v+3) | | Xsquare-5x+2=0 | | x=0.1428571429m+-0.4285714286y | | 70+3x=80+1x | | f(x)=-16x^2+64x+5 | | 6(.5b+3)+4(12-b)=.833 | | h(t)=-16t^2+64t+5 | | 0=(x-1)(x-(3+i))(x-(3-i)) | | 3.7x-27=.7(x-12) | | y=-7x^2-4 | | 13+x=3x | | 6+9=-3-27 | | .0583= | | 11+16=-3(6x-9) | | -7+6(-8n+8)=(2n+5)+7 | | 5x-7+2x=9x+3-10 | | (-6m-9)+(3m+18)= | | -78+12x=22+8x | | (x^3)=7x | | 60x^2-75x=0 | | -2(2x+7)-7(8x-6)=-76 | | -3(2x-7)+2(5x+4)-10=11 | | 1/2x^5 | | 3x+50=3x-50 | | y=x^4-12x^3+35x^2 | | -5w-33=-2(w+9) | | -72+9x=80+x |