If it's not what You are looking for type in the equation solver your own equation and let us solve it.
K in (-oo:+oo)
K-(4/7) = 1/7 // - 1/7
K-(4/7)-(1/7) = 0
K-4/7-1/7 = 0
K-5/7 = 0 // + 5/7
K = 5/7
K = 5/7
| 3x^2-9x=3x^2-6x-9 | | SA=2bs | | 6u+10-2u=2(21) | | 25=400a+20b+c | | 17m-17=0 | | 0.78x=-8.58 | | 18+3a+9a= | | 8w-2w=12 | | X+2.75y=13.25 | | 3=-16x+336 | | 2(3x-6)+6(x-4)=-3(5-5x)+5x-11 | | 3*a*2*b= | | 3–x/8=-2 | | 2x-4(4x+5)=7x-41 | | 13b-6a=1 | | 4x+3=10x+3 | | 10+7a=20+2a | | (6x+1)+(-7x+5)= | | 6+17x=360 | | 2x+14=-70-10c | | y=13.25*x | | 17x+6=180 | | 9m-4=3m+m | | 7xCos+5=0 | | 1/4(8-12v) | | x-1/4-2/5x=378 | | X-4=5.5 | | -12h-8h+17h=18 | | 5x-4=10x+7 | | 6h-24=-8+27h | | (((cosx)-2)/(cos(x/2)))=2 | | 5(x-12)=30 |