Question

(21-28+35)-(21-38-15)

Answer 1

Ответ:

1.Открываем скобки

21-28+35-21+38+15=?

2.21 и - 21 взаимно уничтожаются

-28+35+38+15=?

(35+38+15)-28=?

88-28=60

Ответ:60

Answer 2

Пошаговое объяснение:

=34

1)21-28=7

2)7+35=42

3)21-38=7

4)15-7=8

5)42-8=34

Answer 3

Let's break down the expression step by step:

(21-28+35) - (21-38-15)

Starting with the first set of parentheses, we have:

21 - 28 + 35

Next, we can simplify the addition and subtraction within the parentheses:

= -7 + 35

Now we can perform the addition:

= 28

Moving on to the second set of parentheses:

21 - 38 - 15

Performing the subtraction:

= -17 - 15

And simplifying further:

= -32

Finally, we substitute the values back into the original expression:

(28) - (-32)

Now, subtracting a negative number is the same as adding the positive equivalent, so we can rewrite the expression as:

28 + 32

Evaluating the addition:

= 60

Therefore, the value of the expression (21-28+35)-(21-38-15) is 60.