Question

0,3(5-3y)=4,5-0,8(y-9)

Answer 1

Ответ: 102

$0.3(5 - 3y) = 4.5 - 0.8(y - 9) \\ 1.5 - 0.9y = 4.5 - 0.8y + 7.2 \\ - 0.9y + 0.8y = 4.5 + 7.2 - 1.5 \\ - 0.1y = 10.2 \\ y = 102$

Answer 2

To solve the equation 0.3(5-3y) = 4.5 - 0.8(y-9), we can follow these steps:

1. Distribute the multiplication: 0.3 * 5 - 0.3 * 3y = 4.5 - 0.8(y-9)

   Simplifying the equation: 1.5 - 0.9y = 4.5 - 0.8y + 7.2

2. Combine like terms: -0.9y + 0.9y = -0.8y + 0.9y + 4.5 + 7.2 - 1.5

   Simplifying the equation: 0 = 0.1y + 10.2

3. Subtract 0.1y from both sides: 0 - 0.1y = 0.1y + 10.2 - 0.1y

   Simplifying the equation: -0.1y = 10.2

4. Divide both sides by -0.1 to isolate y: (-0.1y) / (-0.1) = 10.2 / (-0.1)

   Simplifying the equation: y = -102

Therefore, the solution to the equation 0.3(5-3y) = 4.5 - 0.8(y-9) is y = -102.