Question

9а+3(а-5) при а=7 Пж​

Answer 1

$9a+3(a-5), ~~~ a = 7\\\\9a+3a-15 = 9\cdot7+3\cdot 7 - 15 = 69$

Ответ

$69$

Answer 2

To evaluate the expression 9a + 3(a - 5) when a = 7, you need to substitute the value of a into the expression and perform the calculations.

Let's substitute a = 7 into the expression:

9(7) + 3(7 - 5)

Now, simplify the expression inside the parentheses:

9(7) + 3(2)

Perform the multiplications:

63 + 6

Finally, add the two terms:

63 + 6 = 69

Therefore, when a = 7, the value of the expression 9a + 3(a - 5) is 69.