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Twice a number (z) added to 21 is equal to 9 times the number added to 7. What is the number? z=-4 z = -2 z= 2 z=4​
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Twice a number (z) added to 21 is equal to 9 times the number added to 7. What is the number?

z=-4
z = -2
z= 2
z=4​

User Sliver
by
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1 Answer

13 votes
the correct answer is z=2
User Brian Vandenberg
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