Question

4,2 : (у-17,9) = -8,4.

Answer 1

Ответ:

y = 17,4

у = 87/5, у = 17 2/5

Answer 2

To solve the equation 4.2 : (у - 17.9) = -8.4, we can follow these steps:

1. Distribute the division to the terms inside the parentheses: 4.2 / (у - 17.9) = -8.4

2. Multiply both sides of the equation by (у - 17.9) to eliminate the denominator: (у - 17.9) * (4.2 / (у - 17.9)) = -8.4 * (у - 17.9)

Simplifying the left side: 4.2 = -8.4 * (у - 17.9)

3. Distribute -8.4 to the terms inside the parentheses: 4.2 = -8.4у + 8.4 * 17.9

Simplifying the right side: 4.2 = -8.4у + 150.36

4. Rearrange the equation by bringing all terms to one side: -8.4у + 150.36 - 4.2 = 0

Simplifying: -8.4у + 146.16 = 0

5. Now, we can solve for у. Subtract 146.16 from both sides: -8.4у = -146.16

Divide both sides by -8.4 to isolate у: у = -146.16 / -8.4

Simplifying the division: у ≈ 17.4

Therefore, the approximate solution to the equation 4.2 : (у - 17.9) = -8.4 is у ≈ 17.4.