A farmer has some pigs and some ducks.There are 9 heads and 26 feet.how many pigs are there?

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A farmer has some pigs and some ducks.There are 9 heads and 26 feet.how many pigs are there?
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A farmer has some pigs and some ducks.There are 9 heads and 26 feet.how many pigs are there?
A farmer has some pigs and some ducks.There are 9 heads and 26 feet.how many pigs are there?

A farmer has some pigs and some ducks.There are 9 heads and 26 feet.how many pigs are there?
猪x 鸭y
x+y=9
4x+2y=26
x=4
y=5

i got it
the farmer has 5 pigs and 4 ducks,

鸡兔共笼题
4 pigs
5 ducks

4 p
5 d

4

The farmer has four pigs .

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