Question

0,3(6-3x)+0,8*(x-9)=4,5

Answer 1

Ответ:

х = -99

Пошаговое объяснение:

0,3(6-3x)+0,8*(x-9)=4,5

1,8 - 0,9х + 0,8х - 7,2 = 4,5

-0,1х  = 4,5 + 5,4

-0,1х = 9,9      х = 9,9/(-0,1)    х = 99/(-1)     х = -99

Answer 2

To solve the equation 0.3(6 - 3x) + 0.8(x - 9) = 4.5, follow these steps:

1. Distribute the constants inside the parentheses: 0.3 * 6 - 0.3 * 3x + 0.8 * x - 0.8 * 9 = 4.5

2. Simplify the equation by multiplying the constants: 1.8 - 0.9x + 0.8x - 7.2 = 4.5

3. Combine like terms on the left side of the equation: (0.8x - 0.9x) + (1.8 - 7.2) = 4.5

4. Solve for x: -0.1x - 5.4 = 4.5

5. Add 5.4 to both sides of the equation to isolate the variable term: -0.1x = 4.5 + 5.4

6. Combine the constants on the right side: -0.1x = 9.9

7. Finally, divide both sides by -0.1 to solve for x: x = 9.9 / -0.1

Now, calculate the value of x:

x = -99

So, the solution to the equation 0.3(6 - 3x) + 0.8(x - 9) = 4.5 is x = -99.