Question

3×(10a+12)+7×(5-2a...................................​

Answer 1

Ответ:

Пошаговое объяснение:

30a+36+35-14a

16a+71

Answer 2

Ответ:

3(а-4)-7(а+2)-5(2а-8)=3а-12-7а-14-10а+40=14а+14

Answer 3

To simplify the expression 3×(10a+12)+7×(5-2a), we can distribute the multiplication and then combine like terms.

Let's start with the first part, 3×(10a+12): 3 × 10a = 30a 3 × 12 = 36

So, the first part simplifies to 30a + 36.

Moving on to the second part, 7×(5-2a): 7 × 5 = 35 7 × (-2a) = -14a

Therefore, the second part simplifies to 35 - 14a.

Now, we can combine the simplified parts:

30a + 36 + 35 - 14a

To simplify further, we can combine like terms by adding or subtracting coefficients of the same variable (in this case, 'a'). So, combining the 'a' terms, we have:

(30a - 14a) + (36 + 35)

This simplifies to:

16a + 71

Therefore, the simplified expression is 16a + 71.