Multiplying a number by 6 is equal to the number increased by 9 | MathCelebrity Forum

Multiplying a number by 6 is equal to the number increased by 9

math_celebrity

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Multiplying a number by 6 is equal to the number increased by 9.

The phrase a number means an arbitrary variable, let's call it x.
Multiply it by 6 --> 6x

We set this equal to the same number increased by 9. Increased by means we add:
6x = x + 9 <-- This is our algebraic expression

To solve this equation, we type it into the search engine and get x = 1.8.
 
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