# Chapter R - Section R.4 - Properties of Real Numbers - R.4 Exercises: 16

11a

#### Work Step by Step

The distributive property holds that $a(b+c)=ab+ac$ (for real numbers $a$, $b$, and $c$). Therefore, $6a+5a=(6+5)a=(11)a=11a$. In this case, we have used the distributive property in reverse to write the given sum as a product.

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