If it's not what You are looking for type in the equation solver your own equation and let us solve it.
r in (-oo:+oo)
r = 2/7 // - 2/7
r-(2/7) = 0
r-2/7 = 0
r-2/7 = 0 // + 2/7
r = 2/7
r = 2/7
| 14x+2=27+2x | | 7x+12=10x-2 | | 2x^2=6x-1 | | 8n+1=-5-2n | | X+15=348 | | 16/5*75/32= | | -19=28k-16 | | 8/11*4/7*0= | | -19=28-1k/16 | | 5/4x=16 | | 326=2x^3+3x^2+1 | | 24=a*b | | (3x^2+3x-6)+(2x^2+3x+19)-(5x^2-13)= | | 3*p=12 | | 2x^3+3x^2-325=0 | | -3(2x/3-6)=32 | | 2-4y=-1 | | 2-3y=-4 | | 36+19=24x+6 | | 307000-x/307000=.17 | | ((307000-x)/307000)=.17 | | 5(x+3)=2-(x-2) | | 5-16(-x+7)=1+3(2+4x) | | 3=2xy | | 3x-x/2=x-9 | | x+(.07*X)=4265.29 | | 10=-4(2x-3) | | 15x^2-45x=15 | | X^-5Y^-2/x^-5y^3 | | ln(x)+ln(x-3)=ln(108) | | 5(4s+7)=255 | | 3-x=2.5x |