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If f(2x+3y ,2x-7y)=20 x ,t h e nf(x , y)...

If `f(2x+3y ,2x-7y)=20 x ,t h e nf(x , y)e q u a l sdot` `7x-3y` `7x+3y` `3x-7y` (d) `x-k y`

A

x-y

B

7x+3y

C

3x-7y

D

None of these

Text Solution

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The correct Answer is:
B
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