68.9k views
3 votes
|3w+6|=9
Solve for w

User Floella
by
8.0k points

2 Answers

5 votes
Remove the absolute value term. This creates a ± on the right-hand side of the equation because |x|=±x.
3w+6=±(9)

Set up the
3w+6=9

Move all terms not containing w to the right-hand side of the equation.
3w=3

Divide each term in the equation by 3.
w=1

Set up the − portion of the ± solution.
3w+6=−(9)

Simplify.
3w+6=−9

Since 6 does not contain the variable to solve for, move it to the right-hand side of the equation by subtracting 6 from both sides.
3w=−6−9

Subtract 9 from −6 to get −15.
3w=−15

Divide each term in the equation by 3.
w=−5


w=1,−5
User Abhishek Mishra
by
8.0k points
4 votes
so absolute value || means that the result of whatever was in the absolute value signs is now positive so therfor
3w+6=9 or -9 so consider both

3w+6=9
3w+6=-9

3w+6=9
subtract 6 form both sdies
3w=3
divide by 3
w=1

3w+6=-9
subtract 6
3w=-15
divide by 3
w=-5

so w could be 1 or -5
User Yedida
by
7.1k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories