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)
-5*k-(3*k) = 4/7 // - 4/7
-5*k-(3*k)-(4/7) = 0
-5*k-3*k-4/7 = 0
-8*k-4/7 = 0 // + 4/7
-8*k = 4/7 // : -8
k = 4/7/(-8)
k = -1/14
k = -1/14
| -C+5d+7c-11d+d-3c= | | 1/3y-5=15 | | 1/3y-5=60 | | 25x-30=20 | | 8+9x+5(11-2x)= | | -4x-30=x+50 | | 4x+2y=18.50 | | 3t-12=8 | | y+ln(y)=5-x | | 70x+15=9 | | X^2+6x-78=-6 | | y+7=4y-1 | | 12x=11x | | 14x+23=-7 | | 6k+6=0 | | -10x+54=4 | | 5w-2w=15 | | -7x+12=-23 | | (x-3i)(x^2-5x-x*sqrt(3)+5*sqrt(3))=y | | 5x(-120)+7-5=x | | -1x=13x | | 30+3x=2(7+2x) | | -16t^2+240t=500 | | 9x+3=-8 | | (8n+4)-(2n-.4)=0 | | 7x+23=4x+56 | | G/8=_11 | | X-6y=45 | | 11x+5=-4 | | (4j-3)-(2j+5)=0 | | 2x-13/4=5 | | 42x^2+45x-3=0 |