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Subject :IMO    Class : Class 6

Which of the following should be subtracted from 8x + 2y - 15 to get 5x - 6y - 5?

A2x + 8y - 10
B3x - 8y + 10
C3x + 8y - 10
D2x - 5y + 10


Ans 1:

Class : Class 7
ans is wrong

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