Question

17,9 - (2,7 + x) = 20,3

Answer 1

Ответ:

17,9 - (2,7 + x) = 20,3

17,9 - 2,7 - x = 20,3

15,2 - x =20,3

–x = 20,3 - 15,2

–x = 5,1

x = –5,1

Answer 2

Відповідь:

17,9 - (2,7 + x) = 20,3

15,2 - x = 20,3

x = 15,2 - 20,3

x = -5,1

Answer 3

To solve the equation 17.9 - (2.7 + x) = 20.3, we can follow these steps:

1. First, let's simplify the expression within the parentheses:

   2.7 + x = 2.7 + x

2. Next, we can substitute the simplified expression back into the equation:

   17.9 - (2.7 + x) = 20.3

   17.9 - (2.7 + x) = 20.3

3. Now, we can remove the parentheses using the distributive property:

   17.9 - 2.7 - x = 20.3

4. Combine like terms:

   15.2 - x = 20.3

5. To isolate the variable x, we need to get rid of the constant term on the left side. We can do this by subtracting 15.2 from both sides of the equation:

   15.2 - x - 15.2 = 20.3 - 15.2

   -x = 5.1

6. Finally, we solve for x by multiplying both sides by -1 to change the sign:

   x = -5.1

Therefore, the solution to the equation 17.9 - (2.7 + x) = 20.3 is x = -5.1.