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I need help with 3,b

I need help with 3,b-example-1
User Aquila
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You can use common denominators by finding a common factor. One would be to multiply 7 by 5 and 5 by 7 to get the common denominator 35. You have to multiply both numerator and denominator. This will help you find out who’s performance is better.
User Kyle LeNeau
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