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)
(10/7)*x-(5*y) = 15 // - 15
(10/7)*x-(5*y)-15 = 0
(10/7)*x-5*y-15 = 0
10/7*x-5*y-15 = 0 // + -5*y-15
10/7*x = -(-5*y-15) // : 10/7
x = (-(-5*y-15))/10/7
x = 7/10*(15-(-5*y))
x = 7/10*(15-(-5*y))
| (X^2)-2x+8=0 | | x+51=-4x-24 | | 8X-9=10-9X | | 2x^2+2y=-5 | | 10x-24y=10 | | 10x^2-11x=-3 | | 7p+2=142 | | b-958=-27b-6 | | 10m^2+8m=0 | | 3q-20= | | 8a+48=a-246 | | 0=3y^2-16y+16 | | 17y+6=y-794 | | 2y+4=200 | | 26[12*80+24(12*1.5)]=x | | 25y-1.5(4y-7)-2(5y+8)=30.5+2.5(2y-8) | | r-104=-2r-8 | | 9x^2*lnx-6x*lnx=8lnx | | r-143=6r-3 | | m/3-7=-8 | | 8n+6=32 | | 26[13*80+24(13*1.5)]=x | | m/8-7=-8 | | 3+4x+5x-6x-8= | | (1/x)-(4/y) | | 3q-10=20 | | 1/x-4/y | | 7X-2=4X+2 | | 3.3(x)=27 | | 4x^2-13x+6=0 | | (x^4)-(88x^2)+567=0 | | 5cosx=2sin^2x+4 |