300,961 views
27 votes
27 votes
Write -5/9, 3/7, -2/3
in order from least to greatest.

User Rypox
by
2.7k points

1 Answer

20 votes
20 votes

Answer:


(3)/(7) > ( - 5)/(9) > ( - 2)/(3)

Explanation:

Step 1

Fraction \frac{-2}{3}

3

−2

can be rewritten as -\frac{2}{3}−

3

2

by extracting the negative sign.

-\frac{2}{3}<\frac{-5}{9}\text{ and }\frac{-5}{9}<\frac{3}{7}−

3

2

<

9

−5

and

9

−5

<

7

3

Step 2

Fraction \frac{-5}{9}

9

−5

can be rewritten as -\frac{5}{9}−

9

5

by extracting the negative sign.

-\frac{2}{3}<-\frac{5}{9}\text{ and }\frac{-5}{9}<\frac{3}{7}−

3

2

<−

9

5

and

9

−5

<

7

3

Step 3

Least common multiple of 33 and 99 is 99. Convert -\frac{2}{3}−

3

2

and -\frac{5}{9}−

9

5

to fractions with denominator 99.

-\frac{6}{9}<-\frac{5}{9}\text{ and }\frac{-5}{9}<\frac{3}{7}−

9

6

<−

9

5

and

9

−5

<

7

3

Step 4

Compare -\frac{6}{9}−

9

6

and -\frac{5}{9}−

9

5

.

\text{true}\text{ and }\frac{-5}{9}<\frac{3}{7}true and

9

−5

<

7

3

Step 5

Fraction \frac{-5}{9}

9

−5

can be rewritten as -\frac{5}{9}−

9

5

by extracting the negative sign.

\text{true}\text{ and }-\frac{5}{9}<\frac{3}{7}true and −

9

5

<

7

3

Step 6

Least common multiple of 99 and 77 is 6363. Convert -\frac{5}{9}−

9

5

and \frac{3}{7}

7

3

to fractions with denominator 6363.

\text{true}\text{ and }-\frac{35}{63}<\frac{27}{63}true and −

63

35

<

63

27

Step 7

Compare -\frac{35}{63}−

63

35

and \frac{27}{63}

63

27

.

\text{true}\text{ and }\text{true}true and true

Step 8

The conjunction of \text{true}true and \text{true}true is \text{true}true.

\text{true}true

Hint

Do the arithmetic.

Solution

\text{true}true

User Mattkgross
by
3.2k points