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OpenStudy (anonymous):
fractions.find the sum or difference. simplify if possible. 15/20 - 9/20=
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OpenStudy (anonymous):
Similar to \[\frac{15-9}{20}\]
OpenStudy (moongazer):
6/20 = 3/10
OpenStudy (moongazer):
just add the numerator and copy the denominator. cause it similar divide both sides by two to simplify.
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