You collect 30 pieces of Halloween candy and you give x pieces to friends. Your neighbor collects 45 pieces of candy and gives away
twice as many as you. If you end up with the same number of
pieces, how many did you give away?

You gave away 15 pieces of candy.

Step-by-step explanation:

Let x represent the number of pieces you give to friends.

Your equation:

30 - x

Your neighbor's equation:

45 - 2x

Set them equal to each other.

30 - x = 45 - 2x

Evaluate.

30 - x = 45 - 2x

-15 = -x

15 = x

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