If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( s )
s+7 = 0
9*s-4 = 0
s+7 = 0
s+7 = 0
s+7 = 0 // - 7
s = -7
9*s-4 = 0
9*s-4 = 0
9*s-4 = 0 // + 4
9*s = 4 // : 9
s = 4/9
s in (-oo:-7) U (-7:4/9) U (4/9:+oo)
7/(s+7) = -8/(9*s-4) // + -8/(9*s-4)
7/(s+7)-(-8/(9*s-4)) = 0
7/(s+7)+8*(9*s-4)^-1 = 0
7/(s+7)+8/(9*s-4) = 0
(7*(9*s-4))/((s+7)*(9*s-4))+(8*(s+7))/((s+7)*(9*s-4)) = 0
7*(9*s-4)+8*(s+7) = 0
71*s+28 = 0
(71*s+28)/((s+7)*(9*s-4)) = 0
(71*s+28)/((s+7)*(9*s-4)) = 0 // * (s+7)*(9*s-4)
71*s+28 = 0
71*s+28 = 0 // - 28
71*s = -28 // : 71
s = -28/71
s = -28/71
| y-5.3=8.7 | | 8t=-96 | | 4*5+7= | | 9/4=k/12 | | 2x+3y=117 | | h/s=28/70 | | 6x+7(-3x-5)=-48-2x | | -3/4+1/2-7/3+4+5/6 | | yx-4x-10=0 | | 10x+4-x+18=40-10x+x | | 8+2(x-5)=2-8(x-9) | | (10x)/(x^2-64)-8/(x-8)=1/(x+8) | | Y=(C+K)X+5 | | 4x-(6x-8)= | | 7k+2=9k-10 | | -5(3-x)=-20 | | 14=2k+2 | | 5+5(x-9)=8-5(x-2) | | 75s-3=5 | | 8/x+1/2=5/3-3/(2x) | | -6/p-4/3=7/p | | |8x-3|+42 | | 16t^2-9 | | 8x-3(2+2x)=2 | | 3s-5s=2 | | -4x-1.6-6.5=-6x+9.8 | | x+4(x+1)=53 | | 6/7t=12 | | 2/3+4/5-1/15 | | -1/3(-7/8) | | x-7+9=-4 | | 2.5x-5+3x+8=19.6 |