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strojnjashka [21]
3 years ago
10

Solve each equation. Check your solutions. 5 - 3|2 + 2w|= -7

Mathematics
2 answers:
Trava [24]3 years ago
8 0
5-3(2+2w)=-7
5-6-6w=-7
-6w=-7-5+6
-6w=-6
w=1
Citrus2011 [14]3 years ago
7 0

Answer:

w=1\text{ or } w=-3

Step-by-step explanation:

So we have the equation:

5-3|2+2w|=-7

First, subtract 5 from both sides:

-3|2+2w|=-12

Divide both sides by -3:

|2+2w|=4

Definition of Absolute Value:

2+2w=4\text{ or } 2+2w=-4

Divide both sides of the equation by 2 for both equations:

1+w=2\text{ or } 1+w=-2

Subtract 1 from both sides:

w=1\text{ or } w=-3

And we're done!

To check:

5-3|2+2(1)|=-7

Multiply:

5-3|2+2|=-7

Add:

5-3|4|=-7

Multiply:

5-12=-7

Subtract:

-7\stackrel{\checkmark}{=}-7

And:

5-3|2+2(-3)|=-7

Multiply:

5-3|2-6|=-7

Subtract:

5-3|-4|=-7

Absolute Value:

5-3(4)=-7

Multiply:

5-12=-7

Subtract:

-7\stackrel{\checkmark}{=}-7

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