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Solve the absolute value equations algebraically
|m+4|+7=11

User ThinkJet
by
5.6k points

1 Answer

6 votes

Answer:

m=0,-8

Explanation:

Rearrange this Absolute Value Equation

|m+4|+7 = 11

Another term is moved / added to the right hand side.

|m+4| = 4 STEP 2:

Clear the Absolute Value Bars

The Absolute Value term is |m+4|

For the Negative case we'll use -(m+4)

For the Positive case we'll use (m+4)

STEP3:Solve the Negative Case

-(m+4) = 4

Multiply

-m-4 = 4

Rearrange and Add up

-m = 8 Multiply both sides by (-1)

m = -8

Which is the solution for the Negative Case

STEP4:Solve the Positive Case

(m+4) = 4

Rearrange and Add up

m = 0

Which is the solution for the Positive Case

STEP5:

Wrap up the solution

m=-8

m=0

Solutions on the Number Line

Two solutions were found :

m=0,M=-8

User Younis Ar M
by
4.9k points