Question

3a-5+4a-12 при а =7​

Answer 1

Ответ:

Пошаговое объяснение:

3а - 5 + 4а - 12 = 3а + 4а - 5 - 12 = 7а - 17

при а = 7

7 * 7 - 17 = 49 - 17 = 32

Answer 2

To evaluate the expression 3a - 5 + 4a - 12 when a = 7, we substitute the value of a into the expression and perform the calculations.

Let's substitute a = 7 into the expression:

3a - 5 + 4a - 12 = 3(7) - 5 + 4(7) - 12 = 21 - 5 + 28 - 12 = 16 + 28 - 12 = 44 - 12 = 32

Therefore, when a = 7, the expression 3a - 5 + 4a - 12 equals 32.