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)
(2/5)*x = y // - y
(2/5)*x-y = 0
2/5*x-y = 0 // + y
2/5*x = y // : 2/5
x = y/2/5
x = 5/2*y
x = 5/2*y
| y=-7/8x-1 | | 5(2z-1)-4(z+8)=3(z+1) | | 1.8a+2.5-0.9a=4.4a+0.7-2a | | 10000000000000000000000000000000000000000000-10000000000000000000000000000000000000000= | | (3x^2-9x)/(2x-6)=0 | | 6q^2+4q=5q^2+-2q+16 | | 12-3m=1 | | 18-4-2=16 | | (X+3)(x+3)=x^2-3(1-x) | | 11=10-k | | 3x^2-9x/2x-6 | | .16(x-7)+.08x=.14x-.03(70) | | 2n^2-24=0 | | -3(t-6)-(t+4)=9 | | 3x^2-9x/2x-6=0 | | 9-7y=25-3y | | v*t=(v-4)*(t+1) | | X^3-15x^2+62x-72=0 | | 3(2x+2)=6(5x+2)+6 | | X+5+2y=28 | | 1/5×=4/5 | | 2.1+4.2x=1.4y | | f(x)=x-4x+7 | | 80/90 | | v^3-17v^2+60v=0 | | 2+6(x-9)=6-7(x-6) | | 5y-xy-y^2=0 | | 6-9y=4x | | k^2+13k=36 | | 3x(-16)= | | .20x+.15(30)=23.5 | | 5-(2x+3)=2(x+1) |