Mathematics
Mathematics, 22.08.2021 06:30, babygirl62716

A student bought a book for $7 and a pen. The total cost was $9. Which of the following equations can be used to find the cost of the pen? ​


A student bought a book for $7 and a pen. The total cost was $9. Which of the following equations c

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A student bought a book for $7 and a pen. The total cost was $9. Which of the following equations ca...

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