问题 填空题
x
2
=
y
3
=
y+z
5
,则
x+y+z
x
=______.
答案

x
2
=
y
3
=
y+z
5

x
2
=
y+z
5

2
x
=
5
y+z

y+z
x
=
5
2

x+y+z
x
=
5+2
2

x+y+z
x
=
7
2

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