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Subject :IMO    Class : Class 10

If 2x - 3y = 7 and (a + b)x - (a + b - 3) y = 4a + b represent coincident lines, then a and b satisfy the equation

Aa + 5b = 0
B5a + b = 0
Ca - 5b = 0
D5a - b = 0


Ans 1:

Class : Class 10
c. a-5b=0

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