Fill in the blank to complete the equation below. ___ + 28 = 7(3 + 4)

21

Step-by-step explanation:

This is the answer because:

1) To begin with, we can do the distributive property by doing 7(3)= 21 and 7(4) = 28. Once we do this, we know that 7(3+4) = 49 because 21+28 is 49.

2) After this we also know that if 7(4) equals 28, then 49-28 is 21 and 7(3) is also 21.

Therefore, the answer is 21.

Hope this helps!

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step-by-step explanation:

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