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Write an expression that is equivalent to z+z+z+z.
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2 votes
Write an expression that is equivalent to z+z+z+z.

User CtrlDot
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2 Answers

3 votes
multiplication is repeated addition, so z+z+z+z= 4z
User Russell Ghana
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1 vote
A+a+a+a is an answer
User Johannes Mols
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