If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x+7 = 0
x+7 = 0
x+7 = 0
x+7 = 0 // - 7
x = -7
x in (-oo:-7) U (-7:+oo)
2/(x+7)+15/4 = 4 // - 4
2/(x+7)+15/4-4 = 0
(2*4)/(4*(x+7))+(15*(x+7))/(4*(x+7))+(-4*4*(x+7))/(4*(x+7)) = 0
15*(x+7)-4*4*(x+7)+2*4 = 0
15*x-16*x-112+113 = 0
1-x = 0
(1-x)/(4*(x+7)) = 0
(1-x)/(4*(x+7)) = 0 // * 4*(x+7)
1-x = 0
1-x = 0 // - 1
-x = -1 // * -1
x = 1
x = 1
| -8(-4-6k)+8=328 | | -4x+5=0 | | 12x-23=8x+25 | | 7n=-159 | | 4.3=0.3y-7.34 | | -2x^2+5x-4=0 | | 0.38+1.1z=0.6 | | x-5=0.5x+3.5 | | 3/5w=9 | | 6x+4(x+7)=148 | | X/9-2 | | 15c^8d^12/27c^-4d^-8 | | 9s+6t=30 | | 6H+4T+2U= | | 8H+0T+4U= | | 8(w+5)=6w+36 | | 1/14+406 | | Ln(x+4)+ln(x+2)=2 | | 8q=-8 | | 6x+8y=15+9x | | 6x+23=3x+86 | | 4/9=a/45 | | 20x+13-12d=-43 | | 6x+y=-32 | | y^2+2y-3/6y^2+30y+36 | | -64-10=10x+16 | | y-8x=17 | | 8x+16=3x+161 | | 2x+5=-11-9x | | ln(x+1)-ln(x-1)=2*ln(2^1/2) | | 19=7+8x | | m=4x+10+100 |