Question

( X - 8,1 ) * 0,9 = 21,6

Answer 1

Пошаговое объяснение:

1-й способ

Используем распределительное свойство умножения относительно вычитания : a* ( b - c )= ab - ac

( х - 8,1) * 0,9 = 21,6

0,9* х - 0,9 *  8,1 = 21,6

0,9 х - 7,29  = 21,6

0,9 х = 21,6 + 7,29

0,9 х = 28,89

х = 28,89 : 0,9

х = 32,1

2-й способ

( х - 8,1) * 0,9 = 21,6

х - 8,1 = 21,6 : 0,9

х - 8,1 = 24

х = 24 + 8,1

х = 32,1

Answer 2

It seems like you have an equation with a variable X:

(X - 8.1) * 0.9 = 21.6

To solve for X, you can follow these steps:

1. First, distribute 0.9 to both terms inside the parentheses:

0.9 * X - 0.9 * 8.1 = 21.6

2. Next, simplify:

0.9X - 7.29 = 21.6

3. To isolate the term with X, add 7.29 to both sides of the equation:

0.9X = 21.6 + 7.29

0.9X = 28.89

4. Finally, divide both sides by 0.9 to solve for X:

X = 28.89 / 0.9

X = 32.1

So, the solution to the equation is X = 32.1.