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.