# Alexandria is 45. She is also 6 less than three times Kira's age. How old is Kira?

Nov 30, 2016

$17$

#### Explanation:

Let's make an equation

Let the age of Kira be $k$
$3$ times her age would be $3 k$
And Alexandria's age would equal $3 k - 6$

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Then,

$\rightarrow 45 = 3 k - 6$

Add $6$ both sides

$\rightarrow 45 + 6 = 3 k - 6 + 6$

$\rightarrow 51 = 3 k$

Divide both sides by $3$

$\rightarrow \frac{51}{3} = \frac{\cancel{3} k}{\cancel{3}}$

color(green)(rArr17=k

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So Kira's age is $17$