find y, if the following pair of rational number are equal 2/9,-y/15
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2 - y
-- = ----
9 15
after cross multiplication
-9y = 30
-y = 30
-----
9
-y=10/3
y= -10/3
-- = ----
9 15
after cross multiplication
-9y = 30
-y = 30
-----
9
-y=10/3
y= -10/3
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