Question

A) -(-5) и+7; б) -5 и -(-7);

Answer 1

Ответ:

А) -(12)+0

Б) - 2..........

Answer 2

Ответ:

5+7=12

-5+7=2

Пошаговое объяснение:

вроде правильно поняла да?

Answer 3

A) To simplify the expression -(-5) + 7, we can follow the order of operations (also known as PEMDAS or BODMAS).

1. Start with the negation inside the parentheses: -(-5). The negation of a negative number is the same as taking its positive value. So, -(-5) becomes +5.

Now the expression becomes:

+5 + 7

2. Add the two numbers together: 5 + 7 equals 12.

Therefore, the value of the expression -(-5) + 7 is 12.

B) For the expression -5 - (-7), we can again follow the order of operations.

1. Start with the negation inside the parentheses: -(-7). As mentioned before, the negation of a negative number is the same as taking its positive value. So, -(-7) becomes +7.

Now the expression becomes:

-5 + 7

2. Subtract the two numbers: -5 + 7 equals 2.

Therefore, the value of the expression -5 - (-7) is 2.