28/21=21/x

Simple and best practice solution for 28/21=21/x 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 28/21=21/x equation: 


D( x )

x = 0

x = 0

x = 0

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

28/21 = 21/x // - 21/x

28/21-(21/x) = 0

28/21-21*x^-1 = 0

-21*x^-1 = -4/3 // : -21

x^-1 = 4/63

-1 < 0

1/(x^1) = 4/63 // * x^1

1 = 4/63*x^1 // : 4/63

63/4 = x^1

x = 63/4

x = 63/4

See similar equations:

| 5+15x=20x+14 | | 4(1)-3(-2)=10 | | 3t=t+9 | | 3/4x-1/10=-3/8 | | 4(2)-3(-2)=10 | | -14x-2(x+5)=-4(x+4)+18 | | -6+7x-3-13x=4x+9-8x | | -10=5(3x+4) | | =(4x+9)(x^2-x+1)-(x^2-4) | | 7(x-11)-7=19x-204 | | T1/t2=d1^2/d2^2 | | 12+3n=60 | | 0.3b+2.7=0.02b-0.1 | | 1-w=0.23 | | q/7=18 | | 10+5z=-15 | | 0.05-0.01(x+3)=-0.02(2-x) | | 9m-5=75 | | x=.390625*1 | | 23+-4x=14+-7x | | 23-4x=14-7 | | 3/1.5=18/x | | 4b-5-12b-6= | | 3x+27=12x-18 | | 9y-7=10+14y | | (5m/7)=52 | | cos(x)+1.414213562=-cos(x) | | 4(x-4)-10=30x-234 | | 3j-2j=10 | | -2+5u=-22 | | (x+9)*2-18-x= | | 9n^7+10n^4= |

Equations solver categories