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2 = 2/1

So multiplying the numerator and denominator by 2/2, which is 1, you get

2/1 * 2/2 = (2*2) / (1*2) = 4/2

1.5 is equal to 15 divided by 10, so

1.5 = 15/10

Divide the numerator and denominator by 5, you get

1.5 = 15/10 = (15/5) / (10/5) = 3/2

Hope this helps!

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