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Mathematics, 07.05.2021 20:40 s6054682

Help pls!!! Mr. Nelson has a collection of 16 trumpets and tubas. Tubas have four valves and Trumpets have 3 valves.
When Mr. Nelson counted all the valves, there were
53 valves in all.
How many trumpets and how many tubas does Mr.
Nelson have?

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Help pls!!! Mr. Nelson has a collection of 16 trumpets and tubas. Tubas have four valves and Trump...

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