kel3194
09.07.2019 •
Mathematics
Meg practice the piano for 5/12.she did homework for 3/4 of an hour. how much longer did she do homework than she practice piano
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Ответ:
Homework = 3/4 hour = 9/12 hour
Piano = 5/12 hour
9/12 - 5/12 = 4/12 hour = 1/3 hour = 20 minutes
So she did homework 20 minutes longer than practicing piano
Ответ:
Step-by-step explanation:
Step 1: Substitute x from the second equation into the second one
Step 2: Substitute y into the second equation