Question

3) 9,15 + (x – 8,5) = 21,77;​

Answer 1

Ответ:

$9,15+(x-8,5)=21,77\\x-8,5=21,77-9,15\\x-8,5=12,62\\x=12,62+8,5\\x=21,12$

Проверка:

$9,15+(21,12-8,5)=21,77\\9,15+12,62=21,77\\21,77=21,77$

Answer 2

Ответ:

x=21.12

Пошаговое объяснение:

Раскрываем скобки: перед скобками стоит знак + знак не меняем

9,15+x-8,5=21,77

переносим без X влево

x=21,77-9,15+8,5

x=21,12

Answer 3

To solve for x in the equation 9.15 + (x - 8.5) = 21.77, you can follow these steps:

1. First, simplify the equation by combining like terms on the left side:

   9.15 + x - 8.5 = 21.77

2. Next, subtract 9.15 from both sides of the equation to isolate the (x - 8.5) term:

   x - 8.5 = 21.77 - 9.15

3. Now, calculate the values on the right side:

   x - 8.5 = 12.62

4. To solve for x, add 8.5 to both sides of the equation:

   x = 12.62 + 8.5

5. Calculate the final value of x:

   x = 21.12

So, the solution to the equation is x = 21.12.