Question

Вычислите удобным способом: 79*45+79*55-89*45-89*55 Заранее огромное спасибо!!!

Answer 1

2960 ответ на пример 

Answer 2

To calculate the expression 79*45 + 79*55 - 89*45 - 89*55, we can use the distributive property of multiplication over addition and subtraction. Let's break it down step by step:

1. Multiply 79 by 45: 79 * 45 = 3555. 2. Multiply 79 by 55: 79 * 55 = 4345. 3. Multiply 89 by 45: 89 * 45 = 4005. 4. Multiply 89 by 55: 89 * 55 = 4895.

Now, let's substitute these values back into the original expression:

3555 + 4345 - 4005 - 4895

To simplify the expression, we can combine like terms:

(3555 + 4345) - (4005 + 4895)

7895 - 8900

Finally, we can subtract these two values:

7895 - 8900 = -1005

Therefore, the result of the expression 79*45 + 79*55 - 89*45 - 89*55 is -1005.

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