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Can someone explain how to do number 3

Can someone explain how to do number 3-example-1

1 Answer

4 votes
The sum of a triangle is 180.

Set it up like this: 2k + k = 45.

Simplify: 3k = 45

Divide by 3 on both sides.

k = 15.

So 2k = 30.
User Sabeen Malik
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