Question

Выполните действия а)8*(-3)+(-7) б)-0,5*8+1,6*3/084-1 помогите пожалуйста у меня соч​

Answer 1

Ответ:

а) - 31

б)5/7

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Answer 2

а) To solve the expression 8*(-3)+(-7), we follow the order of operations, which is also known as PEMDAS (Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction).

First, we perform the multiplication: 8*(-3) = -24.

Then, we add -24 to -7: -24 + (-7) = -31.

Therefore, the value of the expression 8*(-3)+(-7) is -31.

б) To solve the expression -0.5*8+1.6*3/0.84-1, we again follow the order of operations.

First, we perform the multiplications and divisions from left to right: -0.5*8 = -4, 1.6*3 = 4.8, and 4.8/0.84 = 5.714285714285714.

Then, we perform the additions and subtractions from left to right: -4 + 5.714285714285714 = 1.714285714285714.

Finally, we subtract 1 from 1.714285714285714: 1.714285714285714 - 1 = 0.714285714285714.

Therefore, the value of the expression -0.5*8+1.6*3/0.84-1 is approximately 0.714285714285714.

I hope this helps! Let me know if you have any further questions.