Question

13+7х+12-9х=9 3х+5=2х+7 -6(2Х+1)= -42-3х 1,6(х-3)-0,6(2х-8) =0

Answer 1

Ответ:

Пошаговое объяснение:

13+7х+12-9х=9

-2x + 25 = 9

2x = 25 - 9

2x = 16

x = 16 : 2

x = 8

3х+5=2х+7

3x - 2x = 7 - 5

x = 2

-6(2Х+1)= -42-3х

-12x - 6 = -42 - 3x

12x - 3x = 42 - 6

9x = 36

x = 36 : 9

x = 4

1,6(х-3)-0,6(2х-8) =0

1,6x - 4,8 - 1,2x + 4,8 = 0

0,4x = 0

x = 0

Answer 2

Відповідь:

Покрокове пояснення:

13+7х+12-9х=9

7х-9х=9-13-12

-2х= -16

х=8

зараз інші напишу

Answer 3

Let's solve each equation step by step:

1. 13 + 7x + 12 - 9x = 9

To solve this equation, combine the x terms on one side and the constants on the other side:

(7x - 9x) = 9 - 13 - 12 -2x = -16

Now, isolate x by dividing both sides by -2:

x = -16 / -2 x = 8

So, the solution to the first equation is x = 8.

2. 3x + 5 = 2x + 7

To solve this equation, isolate x on one side:

3x - 2x = 7 - 5 x = 2

The solution to the second equation is x = 2.

3. -6(2x + 1) = -42 - 3x

Distribute the -6 on the left side of the equation:

-12x - 6 = -42 - 3x

Next, combine the x terms on one side and the constants on the other side:

-12x + 3x = -42 + 6 -9x = -36

Now, isolate x by dividing both sides by -9:

x = -36 / -9 x = 4

The solution to the third equation is x = 4.

4. 1.6(x - 3) - 0.6(2x - 8) = 0

Let's first simplify the equation by distributing the coefficients:

1.6x - 4.8 - 0.6x + 4.8 = 0

Now, combine the x terms on one side and the constants on the other side:

1.6x - 0.6x = 0 - 4.8 + 4.8 1x = 0

The solution to the fourth equation is x = 0.

To summarize:

1. x = 8
2. x = 2
3. x = 4
4. x = 0