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Magdalena Garza
Mathematics
6 October, 14:31
How do I simplify 4/10 - 2/15
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Lamar Beasley
6 October, 14:35
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Find a common denominator by using the multiplication by 1 law. anything divided by itself is 1 and anything multiplied by 1 is itself. so the first time 10 and 15 can meet is us at 30. 10 must be multiplied by 3 to get 30.
Using the laws stated earlier:
(4/10) * 1 = 4/10, and
3/3 = 1, so substitute 3/3 for 1 in first equation
(4/10) * (3/3) = 12/30.
Now same for other fraction:
(2/15) * (2/2) = 4/30
Now subtract the 2 equivalent fractions and the answerr is:
(12/30) - (4/30) = 8/30 or 4/15
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