一、王爷爷家养鸡和鸭工300只,鸡的只数十鸭的三倍,王爷爷家养鸭多少只?
解:设鸭x只
3x+x=300
(3+1)x=300
x=300÷4
x=75
养殖吧 2022-10-19 21:51 编辑:admin 191阅读
解:设鸭x只
3x+x=300
(3+1)x=300
x=300÷4
x=75
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