Question

Decide if the expressions in each pair are equivalent. Explain how you know.

x+x+x+x and 4x
5x and x+5

Answer 1

Answer:

x+x+x+x = 4x

5x ≠ x+5

Step-by-step explanation:

x+x+x+x, there are 4 x's, which means they equal to 4x

5x means there are 5 x's, so 5x = x+x+x+x+x, not x+5.

Answer 2

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