I thought this might be easier to answer and show the work using a pic
Which expression represents the phrase the sum of twice a number and 7
1 answer:
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Tony drank 1/3 of a cup of water in the morning.
Tony drank 3/5 of a cup of water in the afternoon.
You need to find out how much water did he drink it all so we need to add 3/5 with 1/3.
3/5 + 1/3 =
= 5/15 + 9/15
=
The answer is 14/15
hope this helps!