ACT Math 7.4 Pre-Algebra

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

ACT MathPre-Algebra
ACT MathematicsPre-Algebra
AlgebraMultiple Variables
One-Variable Equations and Inequalities
Foreign LanguageArabic Subtitled
Chinese Subtitled
Korean Subtitled
Spanish Subtitled
LanguageEnglish Language
Pre-AlgebraAbsolute value and ordering numbers by value
Simple linear equations with one variable
Product TypeACT Math

Transcript

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".