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The quotient of a number and five equals nine
less than one half of the number. What is the
number?

A) -20
B) -10
C) 20
D) 30

Help me please !!

Respuesta :

x = 30

Step-by-step explanation:

If you write out the equation, "The quotient of a number and five equals nine less than one half of the number." Then you get the equation:

[tex]\frac{x}{5} = \frac{1}{2}x - 9[/tex]

First get rid of the denominator. Multiply by a least common multiple. (10) Then you have:

[tex]2x = 5x - 90[/tex]

Get the variable on one side by subtracting 2x from both sides:

[tex]0 = 3x - 90[/tex]

Add 90 to both sides:

[tex]90 = 3x[/tex]

Divide by 3 on both sides:

[tex]30 = x[/tex]

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