## Intermediate Algebra (6th Edition)

4(5 + $x$) $\ne$ $-15$
"Four times the sum" 4 $\times$ (an addition expression) "the sum of 5 and $x$" (5 + $x$) "is not equal to" $\ne$ "the opposite of 15" $-15$ OR 4(5 + $x$) $\ne$ $-15$