a-21/x=4

Simple and best practice solution for a-21/x=4 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for a-21/x=4 equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

a-(21/x) = 4 // - 4

a-(21/x)-4 = 0

a-21*x^-1-4 = 0

-21*x^-1 = -(a-4) // : -21

x^-1 = (4-a)/(-21)

-1 < 0

1/(x^1) = (4-a)/(-21) // * x^1

1 = x^1*((4-a)/(-21)) // : (4-a)/(-21)

-21*(4-a)^-1 = x^1

x = -21*(4-a)^-1

x = -21*(4-a)^-1

See similar equations:

| x-21/x=4 | | x^6-9x^5+30x^4-50x^3+45x^2-21x+4=0 | | x^2-7*x=0 | | 15y+27=132 | | 7x+0.3=28.3 | | 20=-2d+8 | | 8y-19x=2 | | 20=4r-8 | | p=3n^2-30n-180 | | h/6-3=3 | | 18(9-4x)=162 | | x-2.1=1.1 | | j^2-12j+n= | | 7/9-4i | | 20y^2-4=0 | | 9+3x-7=-5 | | 5(2x-1)=10(3x+1) | | -5m+13=-27 | | x=2(x+16) | | x-18/x=-3 | | x/7=70 | | 1000=55000+7X | | 6+2.135=3.51n | | 7-2q/5=q | | 6+2.135=3.15n | | 1/x=5/12 | | 1/x=1/2 | | -13x+5x=15 | | 1/x=-9/35 | | 1/x=-1/8 | | x/3=17/14 | | 2/3x-5=5/3x |

Equations solver categories