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Flauer [41]
3 years ago
15

Write an equivalent expression for the following by combining like terms: 4y − y + 7y

Mathematics
1 answer:
Assoli18 [71]3 years ago
4 0
4y - y + 7y

4y - y = 3y

3y + 7y = 10y

10y is your answer

hope this helps
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Catherine's sister ate 2/15 gallons of the ice cream.

\displaystyle \frac{2}{15}.

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Let x be the amount of ice cream that Catherine's sister ate, in gallons.

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  • What Catherine ate: \displaystyle \frac{1}{5} gallons.
  • What Catherine's sister ate is assumed to be x gallons.
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Consider the relationship:

\text{Original amount - What Catherine ate - What Catherine's Sister ate}\\ =\text{ What's left.}.

That is:

\displaystyle 1- \frac{1}{5} - x = \frac{2}{3}.

Add x to both sides of this equation:

\displaystyle 1 - \frac{1}{5} = \frac{2}{3} +x

Substract \displaystyle \frac{2}{3} from both sides:

\displaystyle 1 - \frac{1}{5} - \frac{2}{3} = x.

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