设养鸭x只,根据题意列方程得:
2x+12+x=486
3x=486-12
3x=474
x=158
486-158=328(只)
答:养鸭158只,养鸡38只.
(486-12)/3=158(只)
486-158=328(只)
一个养殖专业户养鸭,鸡共486只,鸡的只数是鸭的2倍还多12只,这个养殖转用户养鸭,鸡各多少只?
一个养殖专业户养鸭,鸡共486只,鸡的只数是鸭的2倍还多12只,这个养殖转用户养鸭,鸡各多少只?
数学人气:157 ℃时间:2019-12-20 20:30:39
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