14-8, 12-4, 15-9, 18-9, 20-7, Caili has 12 balloons. She give 5 ballons to her friend Dina. How many balloons does Caili has?, There are 16 bananas. 7 bananas are eaten by the monkeys. How many banana are left?, There are 4 chairs. 2 chairs are sold. How many chairs are not sold?

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