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)
15 = k/4 // - k/4
15-(k/4) = 0
15-1/4*k = 0 // - 15
-1/4*k = -15 // : -1/4
k = -15/(-1/4)
k = 60
k = 60
| 6=k/6 | | (x+30)*x=8800 | | 10b+2.70=12 | | 7a-4/5-6a=3/10-1/5 | | 4(3+2y)(3+2y)= | | 0.33m-7=5 | | 5+2x=7x-10 | | logx=y | | graphxy=12 | | 1.25a-8=0.66 | | 0=-16x^2+63x+4 | | 6y-5(y-6)+5=5 | | V=125(5) | | 6p+8=4 | | (x+30)*x=6336 | | 4(5m-1)(m-4)=0 | | 5r^3s^4-10r^2s^5= | | 0=-16x^2+62x+4 | | 14s-33=138.78 | | y/815 | | 2/3x+2= | | (4x+3)(2x-3)= | | 6400(t)=-16t^2+6400 | | 4X+10=5X+12 | | 3x+24=78 | | 8x+7=3(2x+1) | | 2a^2+24a=0 | | 70a-39a=62 | | 124300=a+4b | | 3(x-2)+1-3=-5 | | 12(x-2)=-4(-22) | | 5800*3.25=a |