Question

90-7х5-24:3х5 реши выражения

Answer 1

90х-7х5-24:3х5=90х-35х-8х•5=90х-35х-40х=15х
Ответ : 15х




удачи :)

Answer 2

7*5=35
24/3=8
8*5=40
90-35-40=15

Answer 3

To solve the expressions, follow the order of operations (PEMDAS/BODMAS):

1. Parentheses/Brackets
2. Exponents/Orders
3. Multiplication and Division (from left to right)
4. Addition and Subtraction (from left to right)

Let's solve the expressions step by step:

1. 90 - 7x5 - 24 ÷ 3x5

First, perform the multiplication and division from left to right:

90 - 7x5 = 90 - 35 = 55 55 - 24 ÷ 3x5

Next, perform the division:

24 ÷ 3 = 8 55 - 8x5

Finally, perform the last multiplication:

8x5 = 40 55 - 40 = 15

The result of the first expression is 15.

2. 90 - 7(5 - 24) ÷ 3x5

First, perform the operations inside the parentheses:

5 - 24 = -19

Now, substitute the result back into the expression:

90 - 7(-19) ÷ 3x5

Perform the multiplication:

7(-19) = -133

Now, the expression becomes:

90 - (-133) ÷ 3x5

Perform the division:

(-133) ÷ 3 = -44.33 (rounded to two decimal places)

Now, the expression becomes:

90 - (-44.33) x 5

Perform the last multiplication:

(-44.33) x 5 = -221.65 (rounded to two decimal places)

Finally, perform the subtraction:

90 - (-221.65) = 311.65

The result of the second expression is approximately 311.65 (rounded to two decimal places).

So, the solutions to the expressions are:

1. 90 - 7x5 - 24 ÷ 3x5 = 15
2. 90 - 7(5 - 24) ÷ 3x5 = 311.65 (approximately)