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Question


Which of the pairs given in options will add up to give (9x+5y)?


Options:
A .   3x+2y2x+7y
B .   4x+4y, 5x+y
C .   3x+7y, 6x2y
D .   3x+3y, 4x+7y
Answer: Option B
:
B and C
3x+2y + 2x+7y =5x+9y 9x+5y
4x+4y + 5x+y =9x+5y =9x+5y
3x+7y + 6x2y =9x+5y =9x+5y 
3x+3y + 4x+7y =7x+10y 9x+5y

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