Question

15x-(14 +3x) =10x+21​

Answer 1

Ответ:

х = 17,5

Пошаговое объяснение:

15x-(14 +3x) =10x+21​

15х - 14 - 3х = 10х + 21

12х - 10х = 21 + 14

2х = 35

х = 35/2

х = 17,5

Проверка:

15*17,5 - (14 + 3*17,5) = 10*17,5 + 21

262,5 - (14 + 52,5) = 175 + 21

262,5 - 66,5 = 196

196 = 196 - верно

Answer 2

To solve the equation 15x - (14 + 3x) = 10x + 21, follow these steps:

1. Distribute the negative sign inside the parentheses on the left side of the equation:

   15x - 14 - 3x = 10x + 21

2. Combine like terms on both sides of the equation. On the left side, combine 15x and -3x, and on the right side, subtract 10x from both sides:

   (15x - 3x) - 14 = (10x + 21) - 10x

   12x - 14 = 21

3. Add 14 to both sides of the equation to isolate the term with x on the left side:

   12x - 14 + 14 = 21 + 14

   12x = 35

4. Finally, divide both sides by 12 to solve for x:

   12x/12 = 35/12

   x = 35/12

So, the solution to the equation is:

x = 35/12