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24 May, 18:05

Which are equivalent expressions?

Check all that are true.

y + y + y = y (1 + 1 + 1)

2a + 2b = 4ab

3 · (2 + x) = 6 + 3x

2t + 3t = 5t

x + 3 = 4x

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Answers (1)
  1. 24 May, 18:12
    0
    There are 5 options. Let's figure out which ones are wrong, and why:

    y + y + y = y (1 + 1 + 1)

    This one is correct, because of the distributive property. Another equivalent is 3y.

    2a + 2b = 4ab

    This one is incorrect, as you are not multiplying the numbers.

    3 · (2 + x) = 6 + 3x

    This one is correct, because of the distributive property

    2t + 3t = 5t

    This is correct, as you can add variables together as long as all the variables are the same

    x + 3 = 4x

    This is not correct, as 4x is 4 x's.
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