Question

1)-2/3*(-5/14)*(-3/8)*7/52)-3 1/3*(-1 2/7)*(-3)*(-7)3)-0,2*2 3/5*(-0,5)*(-5/13)​

Answer 1

Ответ:

зделал 1 потому что 5 баллов для 3 заданий, мало

Answer 2

Let's simplify each of these expressions step by step:

1. -2/3 * (-5/14) * (-3/8) * 7/52 - 3 1/3 * (-1 2/7) * (-3) * (-7)

First, let's simplify the fractions:

-2/3 * (-5/14) = 10/42 -3/8 * 7/52 = -21/416

Now, we can multiply these fractions together:

(10/42) * (-21/416) = -210/17472

Next, let's simplify the mixed number -3 1/3 into an improper fraction:

-3 1/3 = -10/3

Now, we can simplify the whole expression:

-210/17472 - (-10/3) * (-1 2/7) * (-3) * (-7)

First, let's simplify the mixed number -1 2/7 into an improper fraction:

-1 2/7 = -9/7

Now, let's simplify the expression:

-210/17472 - (-10/3) * (-9/7) * (-3) * (-7)

Now, let's simplify each part:

-210/17472 = -35/2912 (-10/3) * (-9/7) = 30/7

Now, we can continue simplifying:

-35/2912 - (30/7) * (-3) * (-7)

Now, we can simplify the expression inside the parentheses:

-35/2912 - 90

To subtract these fractions, we need a common denominator, which is 2912:

-35/2912 - (90 * 2912/2912)

Now, we can subtract:

-35/2912 - 262080/2912 = -262115/2912

So, the simplified result is:

-262115/2912

2. 0.2 * 2 3/5 * (-0.5) * (-5/13)

First, let's convert the mixed number 2 3/5 into an improper fraction:

2 3/5 = 13/5

Now, we can simplify the expression:

0.2 * (13/5) * (-0.5) * (-5/13)

Now, let's simplify each part:

0.2 * (13/5) = 2.6

Now, we can continue simplifying:

2.6 * (-0.5) * (-5/13)

Now, multiply the numbers together:

2.6 * (-0.5) * (-5/13) = 6.75

So, the simplified result is:

6.75