ACT Math 7.4 Pre-Algebra

ACT Math: Pre-Algebra Drill 7, Problem 4. Solve for x.

ACT Math	Pre-Algebra
ACT Mathematics	Pre-Algebra
Algebra	Multiple Variables One-Variable Equations and Inequalities
Foreign Language	Arabic Subtitled Chinese Subtitled Korean Subtitled Spanish Subtitled
Language	English Language
Pre-Algebra	Absolute value and ordering numbers by value Simple linear equations with one variable
Product Type	ACT Math

00:23

These vertical line thingies that look like prison bars, except you're the one

00:28

forced to solve this problem. Those numbers are free to come and go as they please.

00:34

The trick to this question is just remembering that absolute value symbols

00:37

make everything inside them

00:39

positive. It means that we can just ignore the stuff inside the absolute value

00:43

things here.

00:43

And use good old common sense to realize that no x can ever make the left side equal -2

00:50

So the solution is that there's no solution.

00:53

Answer E. As in "Ex-con".