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givi [52]
2 years ago
15

GIVING BRAINLIEST FOR BEST ANSWER!

Mathematics
2 answers:
Setler79 [48]2 years ago
6 0

7 / 7 = 1

3 + 1 = 4

4 + 3 and 1 / 3 = 7 and 1 / 3

White raven [17]2 years ago
3 0

Answer:

22/3

Step-by-step explanation:

Conversion a mixed number 3 7/

7

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

7

= 3 · 7 + 7/

7

= 21 + 7/

7

= 28/

7

To find a new numerator:

a) Multiply the whole number 3 by the denominator 7. Whole number 3 equally 3 * 7/

7

= 21/

7

b) Add the answer from previous step 21 to the numerator 7. New numerator is 21 + 7 = 28

c) Write a previous answer (new numerator 28) over the denominator 7.

Three and seven sevenths is twenty-eight sevenths

Conversion a mixed number 3 1/

3

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

3

= 3 · 3 + 1/

3

= 9 + 1/

3

= 10/

3

To find a new numerator:

a) Multiply the whole number 3 by the denominator 3. Whole number 3 equally 3 * 3/

3

= 9/

3

b) Add the answer from previous step 9 to the numerator 1. New numerator is 9 + 1 = 10

c) Write a previous answer (new numerator 10) over the denominator 3.

Three and one third is ten thirds

Add: 28/

7

+ 10/

3

= 28 · 3/

7 · 3

+ 10 · 7/

3 · 7

= 84/

21

+ 70/

21

= 84 + 70/

21

= 154/

21

= 7 · 22/

7 · 3

= 22/

3

For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of both denominators - LCM(7, 3) = 21. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 7 × 3 = 21. In the following intermediate step, cancel by a common factor of 7 gives 22/

3

.

In other words - twenty-eight sevenths plus ten thirds = twenty-two thirds.

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