Question

20а×15 а=5; 4;​

Answer 1

Ответ:

20а×15;

при а=5

20×5×15=1500.

при а=4.

20×4×5=1200.

Answer 2

20а * 15

При a = 5:

20 * 5 * 15 = 1500

При а = 4:

20 * 4 * 15 = 1200

Answer 3

The expression you've provided, "20a × 15a = 5; 4;​," seems to be incomplete or unclear. It appears to be a multiplication operation between two variables, "20a" and "15a," but there is no clear equation or instruction associated with it. Additionally, there are three values listed afterward: 5, 4, and an empty space.

If you can provide more context or clarify the equation you want to solve, I'll be happy to assist you further.