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2 votes
Can you help me plz!!!!

Can you help me plz!!!!-example-1

2 Answers

3 votes
the first one is not and the third one is and two is and the fourth one is not 
User Stan Sokolov
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7.4k points
4 votes
First one, equivalent. (because two times 9z is eighteen z and two times 9w is eighteen w. And eighteen z plus 12z is thirty) second one is equal for similar reasons. Third one is also equal. The last one is not equal.
User Amol Kolekar
by
7.8k points

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