Question

B) 7(x - 3) + 2(5 - y); ​

Answer 1

Ответ:

7х-11-2у

Пошаговое объяснение:

7 (x-3)+2(5-y)

раскрываем скобки:

7х-21+10-2у

ищем подобные это -21 и 10 , -21+10=-11

7х-2у-11

7х-11-2у

Answer 2

Ответ:

7(х-3)+2(5-у)=7х-21+10-2у=7х-11-2у

Answer 3

To simplify the expression 7(x - 3) + 2(5 - y), you can use the distributive property, which allows you to multiply each term inside the parentheses by the coefficient outside the parentheses. Here's how you can simplify it step by step:

1. Start with the original expression: 7(x - 3) + 2(5 - y).

2. Apply the distributive property for the first set of parentheses (7(x - 3)): 7 * x - 7 * 3.

   This simplifies to: 7x - 21.

3. Now, apply the distributive property for the second set of parentheses (2(5 - y)): 2 * 5 - 2 * y.

   This simplifies to: 10 - 2y.

4. Finally, combine the results from step 2 and step 3: 7x - 21 + 10 - 2y.

5. Combine like terms, which means adding or subtracting terms with the same variables: (7x - 2y) + (-21 + 10).

6. Further simplify: 7x - 2y - 11.

So, the simplified expression is 7x - 2y - 11.