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1 vote
Solve -2 - 1 3/7
a.-3 3/7
b. 4/7
c. 1 3/7
d. 3 3/7

User Rafat
by
7.5k points

2 Answers

5 votes

Answer:

- 24/7 Or In Proper Form -3 3/7

Explanation:

Conversion a mixed number 1 3/

7

to a improper fraction: 1 3/7 = 1 3/

7

= 1 · 7 + 3/

7

= 7 + 3/

7

= 10/

7

To find a new numerator:

a) Multiply the whole number 1 by the denominator 7. Whole number 1 equally 1 * 7/

7

= 7/

7

b) Add the answer from the previous step 7 to the numerator 3. New numerator is 7 + 3 = 10

c) Write a previous answer (new numerator 10) over the denominator 7.

One and three sevenths is ten sevenths.

Subtract: -2 - 10/

7

= -2/

1

- 10/

7

= -2 · 7/

1 · 7

- 10/

7

= -14/

7

- 10/

7

= -14 - 10/

7

= -24/

7

It is suitable to adjust both fractions to a common (equal, identical) denominator for adding, subtracting, and comparing fractions. The common denominator you can calculate as the least common multiple of both denominators - LCM(1, 7) = 7. It is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 1 × 7 = 7. In the following intermediate step, it cannot further simplify the fraction result by canceling.

In other words - minus two minus ten sevenths is minus twenty-four sevenths.

User Martin Ongtangco
by
8.5k points
5 votes

Answer:

a

Explanation:

User Paata
by
8.4k points

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