Question

-4(-4+3+2(-6+2-4)-2-4=-4-4-12-12+4-4-2-4= 60 (y - 3) - 15(2 - y) =5(2у - 6) - (у + 5) =Упростить выражения и вычислить ихзначение, если у=-4решить и подробно расписать ​

Answer 1

Ответ:

=2,8

Пошаговое объяснение:

вродеби правельно

Answer 2

Let's simplify and calculate the given expressions step by step.

1. -4(-4+3+2(-6+2-4)-2-4)

First, let's simplify the expression inside the parentheses:

-4 + 3 + 2(-6 + 2 - 4) - 2 - 4

-4 + 3 + 2(-8) - 2 - 4

-4 + 3 - 16 - 2 - 4

-4 - 16 - 3 - 2 - 4

-20 - 3 - 2 - 4

-23 - 2 - 4

-25 - 4

-29

Therefore, -4(-4+3+2(-6+2-4)-2-4) simplifies to -29.

2. 60(y - 3) - 15(2 - y)

Let's simplify each term inside the parentheses:

60(y - 3) - 15(2 - y)

60(y) - 60(3) - 15(2) + 15(y)

60y - 180 - 30 + 15y

Combine like terms:

75y - 210

Therefore, 60(y - 3) - 15(2 - y) simplifies to 75y - 210.

3. 5(2y - 6) - (y + 5)

Let's simplify each term inside the parentheses:

5(2y - 6) - (y + 5)

10y - 30 - y - 5

Combine like terms:

9y - 35

Therefore, 5(2y - 6) - (y + 5) simplifies to 9y - 35.

Now, let's substitute y = -4 into each of the simplified expressions:

-4 for y:

-29 = -29

75y - 210 = 75(-4) - 210 = -300 - 210 = -510

9y - 35 = 9(-4) - 35 = -36 - 35 = -71

Therefore, when y = -4, the values of the simplified expressions are:

-4(-4+3+2(-6+2-4)-2-4) = -29 60(y - 3) - 15(2 - y) = -510 5(2y - 6) - (y + 5) = -71