If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
5*x+7 = 0
10*x-7 = 0
5*x+7 = 0
5*x+7 = 0
5*x+7 = 0 // - 7
5*x = -7 // : 5
x = -7/5
10*x-7 = 0
10*x-7 = 0
10*x-7 = 0 // + 7
10*x = 7 // : 10
x = 7/10
x in (-oo:-7/5) U (-7/5:7/10) U (7/10:+oo)
(8*x+5)/(10*x-7) = (4*x+3)/(5*x+7) // - (4*x+3)/(5*x+7)
(8*x+5)/(10*x-7)-((4*x+3)/(5*x+7)) = 0
(8*x+5)/(10*x-7)+(-1*(4*x+3))/(5*x+7) = 0
((8*x+5)*(5*x+7))/((10*x-7)*(5*x+7))+(-1*(4*x+3)*(10*x-7))/((10*x-7)*(5*x+7)) = 0
(8*x+5)*(5*x+7)-1*(4*x+3)*(10*x-7) = 0
79*x+56 = 0
(79*x+56)/((10*x-7)*(5*x+7)) = 0
(79*x+56)/((10*x-7)*(5*x+7)) = 0 // * (10*x-7)*(5*x+7)
79*x+56 = 0
79*x+56 = 0 // - 56
79*x = -56 // : 79
x = -56/79
x = -56/79
| 2*1725=m+1/2m | | 38=4x+3(2x-4) | | 25+x=9 | | 2x/5-4=12 | | 4x+2(x-2)=26 | | 13ab+1(-12ab)= | | 3x+2(x+4)=53 | | 3/4(24-8a)=2(5a+1) | | 4-a=9 | | (1-x)((2-x)(1-x)-1)-1((1-x)-2)+2(1-2(2-x))=0 | | (4)/(x-1)+(6)/(3x+1)=(15)/(3x+1) | | 7=5(s-5t) | | S=n/2(a+1) | | (1/5)(x-8)=x+16 | | d/4=31 | | 8x-(6x-4)=27 | | m/2+4=m+10 | | n-6=1 | | x+1=.125(x-6) | | 2(4r+5)-12= | | 2x^3-x^2-18x+36k=0 | | 3/4+1/6x=7/24 | | 5j+a=t-2 | | 10x^2+6x=-1 | | 16x-19(x-16)= | | x/-11=-13 | | 2y+3x=44 | | 6+ln(x-5)=8 | | 3/x+1=9/4x+5 | | 53.8-4.8=(0.21) | | 760=40h(200) | | 4z-(2z-5)=3-4(2z+3) |