Question

B) 5 *(7c + 3);e) (9-5y)*. 8.Решите! Пожалуйста! ​Всего то 2 примера.

Answer 1

(a + b) · c = ac + bc - распределительное свойство умножения

в) 5 · (7с + 3) = 5 · 7с + 5 · 3 = 35с + 15

е) (9 - 5у) · 8 = 9 · 8 - 5у · 8 = 72 - 40у

Answer 2

Sure, let's solve the given expressions:

B) 5 * (7c + 3)

To solve this expression, you can distribute the multiplication (5) across the terms inside the parentheses.

5 * 7c + 5 * 3

Now, multiply:

35c + 15

e) (9 - 5y) * 8

To solve this expression, again distribute the multiplication (8) across the terms inside the parentheses.

8 * 9 - 8 * 5y

Now, multiply:

72 - 40y

So, the simplified expressions are:

B) 35c + 15

e) 72 - 40y