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Mathematics 7 Online
OpenStudy (anonymous):

Use properties to determine whether the expressions are equivalent. 17. ( x + 7 ) · 8 and x + 56 18. (3 · m) · 1 and 3m 19. ( 5y + 0 ) and 5y 20. 12 · ( k · 6 ) and 18k help anyone?

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