Question

−
15
7
​

6
1
​

​
−
7
10
​

Answer 1

To perform the calculation, we first need to clarify the expression. It seems you are trying to subtract two fractions:

\[
\frac{-15}{7} - \frac{7}{10}
\]

To subtract these fractions, we need a common denominator:

1. **Finding a Common Denominator:**
The denominators are 7 and 10. The least common multiple (LCM) of 7 and 10 is 70.

2. **Convert each fraction:**
- For \(\frac{-15}{7}\):
\[
\frac{-15}{7} = \frac{-15 \times 10}{7 \times 10} = \frac{-150}{70}
\]
- For \(\frac{7}{10}\):
\[
\frac{7}{10} = \frac{7 \times 7}{10 \times 7} = \frac{49}{70}
\]

3. **Subtract the fractions:**
Now we can subtract:
\[
\frac{-150}{70} - \frac{49}{70} = \frac{-150 - 49}{70} = \frac{-199}{70}
\]

4. **Final Result:**
The result of the subtraction is:
\[
\frac{-199}{70}
\]

This fraction cannot be simplified further because 199 is a prime number. So the final result is \(\frac{-199}{70}\).