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 = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
7/x-2 = 0
7*x^-1 = 2 // : 7
x^-1 = 2/7
-1 < 0
1/(x^1) = 2/7 // * x^1
1 = 2/7*x^1 // : 2/7
7/2 = x^1
x = 7/2
x = 7/2
| -15=-8h+16 | | 12.5=t-3.5 | | y=x^2+6x+71 | | x-4-(x-4)/3=0 | | (5x-3)*(6+x)=0 | | 256-(-27)= | | -5(-4)-24= | | 2x(x+7)=-35 | | 9x+1=2(1+4x) | | .14n=84 | | -7=2.25+5k | | h=6.9t^2+6t+.6 | | 7x+20+5x+48=180 | | 5s-12=18 | | 40+2b+b=180 | | -40+5b=2(1+6b) | | 8x+30+5x+48=180 | | 4x-3=7-2x | | 866/1000 | | 2x*5=30 | | 1/3(k-24)=2 | | 784=((40-2x)(20-2x))(x) | | 7/12-5/18= | | x^2+2x+49=0 | | 4d+10=-26 | | -3.8t^2+25t=0 | | 4w/7=8 | | 5x-4y=-8+2 | | 5x-9=11+6x | | 5y=10/9 | | sin(2x+30)=0.8 | | 5n+5=80 |