SOLVING SIMPLE SENTENCES BY INSPECTION

In this exercise, you will practice solving sentences ‘by inspection’.
That is, you will look at the sentence, stop and think, and come up with a number that makes the sentence true.

Some sentences have exactly one solution.
Some sentences have many solutions; you will provide only one.
You should do this exercise without using a calculator.

EXAMPLES:
Question: Solve:   [beautiful math coming... please be patient] $x = 5$
Answer: [beautiful math coming... please be patient] $5$
Question: Solve:   [beautiful math coming... please be patient] $x \gt 5$
Answer: [beautiful math coming... please be patient] $\,5.1\,$,   or $\,6\,$,   or $\,1007.4\,$;   any number in the interval $\,(5,\infty)\,$
(You may want to review interval notation.)
Question: Solve:   [beautiful math coming... please be patient] $\displaystyle\frac{x}{6} = \frac{1}{2}$
Answer: $3$
Question: Solve:   [beautiful math coming... please be patient] $x + 2 = 9$
Answer: $7$
Master the ideas from this section
by practicing the exercise at the bottom of this page.

When you're done practicing, move on to:
Using Mathematical Conventions

 
 
Give a solution to this sentence:
    
(MAX is 23; there are 23 different problem types.)