If x+y=a,y+z=b, andx+z=c, whatisthe average (arithmetic mean) of x, y, and z?[im

游客2025-02-24 19

问题 If x+y=a,y+z=b, andx+z=c, whatisthe average (arithmetic mean) of x, y, and z?

选项 A、
B、
C、
D、
E、

答案 D

解析

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Ifx+y=a,y+z=b,andx+z=c,whatistheaverage(arithmeticmean)ofx,y,andz?[im