A) \[7x-3y\]
B) \[7x+3y\]
C) \[3x-7y\]
D) \[3x+7y\]
Correct Answer: B
Solution :
[b] Let \[2x+3y=A\]and \[2x-7y=B\] Then, \[7A+3B=20x\]\[\therefore f(A,B)=7A+3B\] \[\therefore f(x,y)=7x+3y\]You need to login to perform this action.
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