Question

1,4(3-х) – 0,9(х+3) =4,7

Answer 1

4,2-1,4х-0,9х-2,7=4,7

2,5-2,3х=4,7

2,3х=2,5-4,7

2,3х=-2,2

х=-1 9/23

Минус одна целая девять двадцать третьих

Answer 2

Ответ:

- 1 9/23.

Решение:

1,4•(3-х) – 0,9•(х+3) = 4,7

4,2 - 1,4х - 0,9х - 2,7 = 4,7

- 1,4х - 0,9х = 4,7 + 2,7 - 4,2

- 2,3х = 3,2

х = 3,2 : (-2,3)

х = - 32/23

х = - 1 9/23

Ответ: - 1 9/23.

Answer 3

To solve the equation 1.4(3 - x) - 0.9(x + 3) = 4.7, we can follow these steps:

1. Distribute the multiplication on both terms: 1.4 * 3 - 1.4 * x - 0.9 * x - 0.9 * 3 = 4.7

2. Simplify each term: 4.2 - 1.4x - 0.9x - 2.7 = 4.7

3. Combine like terms: -2.3x + 1.5 = 4.7

4. Move the constant term to the other side by subtracting 1.5 from both sides: -2.3x = 4.7 - 1.5

5. Simplify the right side: -2.3x = 3.2

6. Divide both sides by -2.3 to solve for x: x = 3.2 / -2.3

7. Calculate the value of x: x ≈ -1.39

Therefore, the solution to the equation is x ≈ -1.39.