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Six increased by three times a number is 42. What is the number?
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$x=12$

Explanation:

Formulate an equation and let $x$ be the unknown number

$6+3x=42$

Solve the equation for $x$:

$3x=42-6$

$3x=36$

dividing both sides by 3

$\therefore x=12$

by Diamond (55,883 points)

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