3-2(m+4)=15 how do I do this

asked Jul 16, 2016 167k views

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Multipy -2(m+4) first
Then you have
3-2m-8=15
Subtact 3 and 8 from each side
-2m=4
Divide by -2 on both sides
m=-2
Then plug in -2 for m to check

Darshini answered Jul 19, 2016

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2 votes

3 - 2(m + 4) = 15
3 - 2(m) - 2(4) = 15
3 - 2m - 8 = 15
3 - 8 - 2m = 15
-5 - 2m = 15
+ 5 + 5
-2m = 20
-2 -2
m = -10

Rayanne answered Jul 22, 2016

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