Mathematics, 16.07.2019 14:30 rio1228p7c7vj

Manuel and sonja are shopping for school supplies. manuel is buying 5 notebooks and 3 pens at a cost of $21. sonja is buying 6 notebooks and 5 pens at a cost of $28. the first equation, representing manuel’s purchase, is mc015-1.jpg. what is the second equation needed to solve the system?

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Manuel and sonja are shopping for school supplies. manuel is buying 5 notebooks and 3 pens at a cost...