Question

13*19-19*10+10*21-21*7+7*23-23*4+4*25-25

Answer 1

=247-190+210-147+161-92+100-25=264

Answer 2

Ответ получится:  264     

Answer 3

To solve the expression 13*19-19*10+10*21-21*7+7*23-23*4+4*25-25, we can follow the order of operations, which is commonly known as PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, and Addition and Subtraction from left to right).

Let's break down the expression step by step:

1. Multiplication: - 13 * 19 = 247 - 19 * 10 = 190 - 10 * 21 = 210 - 21 * 7 = 147 - 7 * 23 = 161 - 23 * 4 = 92 - 4 * 25 = 100 - 25

2. Subtraction and Addition: - 247 - 190 + 210 - 147 + 161 - 92 + 100 - 25

Now we can combine the terms:

- 247 - 190 + 210 - 147 + 161 - 92 + 100 - 25 = 264

Therefore, the result of the expression 13*19-19*10+10*21-21*7+7*23-23*4+4*25-25 is 264.