Question

1680 : (12а – 5а) =20​

Answer 1

Ответ:

12.

Пошаговое объяснение:

1680 : ( 12а - 5а ) = 20

1680 : ( 7а ) = 20

1680/7а = 20

240/а = 20 |*а

20а=240

а=240÷20

а = 12

Answer 2

Ответ:

$1680 \div (12a - 5a) = 20 \\ 1680 \div 7a = 20 \\ 7a = 1680 \div 20 \\ 7a = 84 \\ a = 84 \div 7 \\ a = 12$

Ответ:12

Answer 3

It seems like you have an equation that you would like to solve for the variable $a$. Let's simplify and solve the equation step by step:

$1680 = (12a - 5a) \times 20$

First, simplify the left side of the equation:

$1680 = 7a \times 20$

Now, simplify the right side of the equation:

$1680 = 140a$

To isolate $a$, divide both sides of the equation by 140:

$a = \frac{1680}{140}$

$a = 12$

So, the value of $a$ that satisfies the equation is $a = 12$.