Question

-3(0,9x - 1.5) = -9(x - 1.3)

Answer 1

Ответ:

-2,7х+4,5=-9х+11,7

6,3х=7,2

х=7,2\6,3

Пошаговое объяснение:

Answer 2

Ответ:

$- 2.7x + 4.5 = - 9x + 11.7 \\ - 2.7x + 4.5 + 9x - 11.7 = 0 \\ 6.3x - 7.2 = 0 \\ 6.3x = 7.2$

$x = 7.2 \div 6.3 \\ x = \frac{72}{63} = 1 \frac{9}{63} = 1 \frac{1}{7}$

Answer 3

Let's solve the equation step-by-step:

-3(0.9x - 1.5) = -9(x - 1.3)

1. Distribute the -3 on the left side: -3 * 0.9x = -2.7x -3 * (-1.5) = 4.5

So the equation becomes: -2.7x + 4.5 = -9(x - 1.3)

2. Now distribute the -9 on the right side: -9 * x = -9x -9 * (-1.3) = 11.7

The equation becomes: -2.7x + 4.5 = -9x + 11.7

3. Move all the terms containing x to one side of the equation. To do this, let's add 2.7x to both sides: -2.7x + 2.7x + 4.5 = -9x + 2.7x + 11.7

Simplifying: 4.5 = -6.3x + 11.7

4. Now, isolate the term with x by subtracting 11.7 from both sides: 4.5 - 11.7 = -6.3x + 11.7 - 11.7

Simplifying further: -7.2 = -6.3x

5. Lastly, solve for x by dividing both sides by -6.3: x = -7.2 / -6.3

Simplified: x ≈ 1.1428571428571428

So the solution to the equation is approximately x ≈ 1.14.