Question

-7/10+(-8/15)= pls help

Answer 1

1) раскроем скобки:

$- \frac{7}{10} + ( - \frac{8}{15} ) = - \frac{7}{10} - \frac{8}{15}$

2) узнаем общий знаменатель (30). приведём дроби к общему знаменателю, домножив первую дробь на 3, а вторую на 2. получим:

$- \frac{21}{30} - \frac{16}{30}$

3) вычислим разность и получим:

$- \frac{37}{30}$

4) переведём в неправильную дробь:

$- \frac{37}{30} = - 1 \times \frac{7}{30}$

Answer 2

To add these two fractions, you need to find a common denominator. In this case, the common denominator would be 30 because it's the least common multiple of 10 and 15.

So, you need to rewrite both fractions with a denominator of 30:

-7/10 = -21/30 (multiplied both the numerator and denominator by 3 to get a denominator of 30) -8/15 = -16/30 (multiplied both the numerator and denominator by 2 to get a denominator of 30)

Now that both fractions have the same denominator, you can add them together:

-21/30 + (-16/30) = (-21 - 16) / 30 = -37/30

So, -7/10 + (-8/15) = -37/30.