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Mathematics 7 Online
OpenStudy (anonymous):

Solve the formula P = 2l + 2w for w. Ive been stuck on this one.

OpenStudy (drewbooks):

First, you'll want to subtract 2l from both sides.

OpenStudy (drewbooks):

What does that give you?

OpenStudy (anonymous):

2l(p)?

OpenStudy (drewbooks):

No, you're just subtracting, so it's P - 2l = 2w.

OpenStudy (drewbooks):

You've eliminated the 2l from the right side, so now all that's left is 2w.

OpenStudy (drewbooks):

How do you get rid of the 2?

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