问题
解答题
已知:3x-5y=0,求:(1)
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答案
(1)∵3x-5y=0,∴3x=5y,∴
=x y
;5 3
(2)
=x-y y
=5-3 3
;2 3
(3)∵
=x y
,∴5 3
=y x
,∴3 5
=x+y x
=5+3 5
.8 5
已知:3x-5y=0,求:(1)
|
(1)∵3x-5y=0,∴3x=5y,∴
=x y
;5 3
(2)
=x-y y
=5-3 3
;2 3
(3)∵
=x y
,∴5 3
=y x
,∴3 5
=x+y x
=5+3 5
.8 5