Question

plzzz solve these questions .....​

Answer 1

Step-by-step explanation:

First convert mixed fraction into Improper

$\frac{7 \times 2 + 3}{7} = \frac{17}{7 } \\ \\ \frac{7 \times ( - 5) + 4}{7} = \frac{ - 31}{7 } \\ \\ \\ \frac{17}{7} + \frac{ - 31}{7} = \frac{ - 14}{7}$

now the second part the denominators aren't same hence First we have to make them same so:

$\frac{4}{15} - \frac{ - 2}{5} \\ \\ \frac{4 \times 5}{15 \times 5} = \frac{20}{75} \\ \\ \frac{ - 2 \times 15}{5 \times 15} = \frac{ - 30}{75} \\ \\ \frac{20 + ( - 30)}{75} = \frac{ - 10}{75}$

Now the last step Subtract the both answers, but First we have to convert it :

$\frac{ - 14}{7} - \frac{ - 10}{75} \\ \\ \frac{ - 14 \times 75}{7 \times 75} = \frac{ - 1050}{525} \\ \\ \frac{ - 10 \times 7}{75 \times 7} = \frac{ - 70}{525} \\ \\ \frac{ - 1050 - ( - 70)}{525} = \frac{ - 980}{525}$

And this is your answer of the First question.......