Question

5x-13=-25 3x+12=2x-5 2*(x-3)=4x+10

Answer 1

Ответ:

5х-13=-25

5х=-25+13

5х=-12

Х= (-2,4)

3х+12=2х-5

3х-2х=-5-12

Х=-17

2*(x-3)=4x+10

2х-6=4х+10

2х-4х=10+6

-2х=16

Х= (-8)

Answer 2

Let's solve each equation step by step:

1. 5x - 13 = -25

To isolate x, we'll add 13 to both sides:

5x - 13 + 13 = -25 + 13

5x = -12

Next, divide both sides by 5 to solve for x:

5x/5 = -12/5

x = -12/5 or -2.4

2. 3x + 12 = 2x - 5

We want to isolate x, so let's subtract 2x from both sides:

3x - 2x + 12 = 2x - 2x - 5

x + 12 = -5

Next, subtract 12 from both sides:

x + 12 - 12 = -5 - 12

x = -17

3. 2 * (x - 3) = 4x + 10

First, distribute the 2 on the left side of the equation:

2x - 6 = 4x + 10

Next, subtract 2x from both sides:

2x - 2x - 6 = 4x - 2x + 10

-6 = 2x + 10

Now, subtract 10 from both sides:

-6 - 10 = 2x + 10 - 10

-16 = 2x

Finally, divide both sides by 2:

-16/2 = 2x/2

-8 = x

The solutions for the given equations are:

1. x = -2.4
2. x = -17
3. x = -8