Question

-2 2/3* 3/8*(-3 1/3); 2 2/5*(-5/6) *(-7/10)​

Answer 1

Ответ:

3 1/3

1,4

Пошаговое объяснение:

-2 2/3 * 3/8 * ( -3 1/3 )

-8/3 * 3/8 * ( -10/3 )

10/3 = 3 1/3

2 2/5 * ( -5/6 ) * ( -7/10 )

12/5 * ( -5/6 ) * ( -7/10 )

12/5 * 5/6 * 7/10

2 * 7/10

7/5 = 1 2/5 = 1,4

Answer 2

Let's break down each expression step by step:

1. (-2 2/3) * (3/8) * (-3 1/3):

First, let's convert the mixed numbers to improper fractions:

-2 2/3 = -8/3 -3 1/3 = -10/3

Now, multiply the fractions:

(-8/3) * (3/8) * (-10/3) = (-8/3) * (-10/3) = 80/9

2. (2 2/5) * (-5/6) * (-7/10):

Again, convert the mixed numbers to improper fractions:

2 2/5 = 12/5

Now, multiply the fractions:

(12/5) * (-5/6) * (-7/10) = (12/5) * (5/6) * (7/10) = (2/1) * (1/1) * (7/10) = (2/1) * (7/10) = 14/10

Reduce the fraction by dividing both the numerator and denominator by their greatest common divisor, which is 2:

(14/10) ÷ 2 = (7/5)

So, the simplified result for the second expression is 7/5.

To summarize:

1. (-2 2/3) * (3/8) * (-3 1/3) = 80/9
2. (2 2/5) * (-5/6) * (-7/10) = 7/5