a-3b = a - 9a -9 = -8a-9 = non-even1). b=3a+3
2). b-a is an odd number
b-a + 2(a-2b) = a-3b
Odd + Even = odd, So a-3b = non-even
IMO D assumption a,b are integers
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Is a-3b an even number?
2). b-a is an odd number
b-a + 2(a-2b) = a-3b
Odd + Even = odd, So a-3b = non-even
IMO D assumption a,b are integers
2). b-a is an odd number
b-a + 2(a-2b) = a-3b
Odd + Even = odd, So a-3b = non-even
IMO D assumption a,b are integers
Anil Gandham
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Welcome to BEATtheGMAT | Photography | Getting Started | BTG Community rules | MBA Watch
Check out GMAT Prep Now's online course at https://www.gmatprepnow.com/
