# Chapter 1 - Section 1.4 - Basic Rules of Algebra - Exercise Set - Page 54: 72

$9(3x),$ simplifies to $27x$

#### Work Step by Step

" nine times..."$\rightarrow 9\cdot(...)$ "...the product of $3$ and a number" $\rightarrow (3x)$ the expression translates to$:\qquad 9(3x)$ Using the associative property of multiplication, $9(3x)=(9\cdot 3)x$ $=27x$

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