If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( y )
y+5 = 0
y+5 = 0
y+5 = 0
y+5 = 0 // - 5
y = -5
y in (-oo:-5) U (-5:+oo)
4 = -(7/(y+5)) // + 7/(y+5)
7/(y+5)+4 = 0
7/(y+5)+(4*(y+5))/(y+5) = 0
4*(y+5)+7 = 0
4*y+27 = 0
(4*y+27)/(y+5) = 0
(4*y+27)/(y+5) = 0 // * y+5
4*y+27 = 0
4*y+27 = 0 // - 27
4*y = -27 // : 4
y = -27/4
y = -27/4
| 55x+70x=500 | | x^2+2x+3x=700 | | 7cd-cd=0 | | 4=-7/y+5 | | 55x*70x=500 | | 6x-4x^2=0 | | 4=-(7/y+5) | | 1/6x1/2 | | 16r^2+8r-15= | | -8b(8n-8)=0 | | 2ac-2bc+ac-2c=0 | | -2=7/(y-4) | | 4s+2=14 | | 9x-77=7x-45 | | (3/10)2-1 | | z/32+5/8=13/26 | | 2y^2-4y^3= | | 2(4k+1)+3(5k+1)= | | 4x^2+16xy= | | (20x)-5y=-15 | | 2(4-4)=4-10 | | 1/2(8a^2-10a+7) | | -5x^2+7x-4=0 | | 1250+8%12= | | x+5=2x+0 | | 2(4-x)=x-10 | | x=(3/10)y-1 | | 5x-15/3x-9 | | 8+2x=7x-27 | | -3+x=3x-25 | | 10x-6=66 | | 13q-3q= |