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)
2*k-10 = -28 // + 28
2*k-10+28 = 0
2*k+18 = 0 // - 18
2*k = -18 // : 2
k = -18/2
k = -9
k = -9
| 13.7t-4.7=9.9+81t | | -5a+6=-14 | | -3m+9=36 | | 4k+3=47 | | -5x/6/2 | | 7a+8=15 | | -7m+4=-38 | | b/3=-6 | | (6+6)+4*6= | | -5+b=-6 | | 7+d=17 | | -9=b+1 | | -1+d=-7 | | -6+n=1 | | 25024=5y+3.89 | | (x-4)(x-1)(x+9)=0 | | -5+b=-5 | | t/-5=-3 | | 8=w+8 | | 20-5*3= | | 10=b-2 | | -3=m-8 | | X(2)+14x+33=0 | | 4(3x+1)-7x=6+4x-2 | | -2+a=0 | | b+1=-9 | | d/-5=6 | | -12=t-3 | | 1.20-5*3= | | 3x/8+2x-4 | | -7=n+1 | | -6+w=1 |