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Gregg has q quarters and p pennies. His brother has 4 times as many quarters and 8 times as many pennies as gregg has. Write the sum of the numbers of coins they have, and then combine like terms

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Greg: q+p
Bro: 4q+8p

now just add them up.

Gregg: p + q Coins.

Brother: 8p + 4q Coins.

Sum = 8p+p + q+4q = 9p + 5q

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