Mathematical formula package

Three bags.

The remaining 9 in 2 bags are calculated by mathematical formula: 29 pears, one bag 10 pears, (10+ 10) can hold 2 bags, that is, 20 pears and the remaining 9 pears.

In the development of human history and social life, mathematics also plays an irreplaceable role, and it is also an indispensable basic tool for studying and studying modern science and technology.

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