# Math

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Uncle Ritchie has some \$10 bills in his wallet. He shares all of them equally among his 4 nieces and nephews. Each of the nieces and nephews then donates two \$10 bills to charity. They then each have five \$10 bills.
How many \$10 bills did Uncle Ritchie have in his wallet?

a) write an equation to solve this problem.
b) solve the equation.

• Math -

4 * 7 = x

28 = x

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