1800/x -2000/1.25x=1/12
问题描述:
1800/x -2000/1.25x=1/12
答
1800/x-1600/x=1/12
200/x=1/12
x=2400
答
1800/x -2000/1.25x=1/12
1800/x -1600/1x=1/12
200/x = 1/12
x=2400