Question

5x-9=3x і 6х=21 2х=-12 і х+6=0 12х=0 і 15х=15

Answer 1

5x-3x=9. 6x=21 2x=-12

2x=9. x=3.5 x=-6

x=4,5

12x=0

x=0

x+6=0

x=-6

15x=15

x=1

Answer 2

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

1. 5x - 9 = 3x

To solve this equation, we need to isolate x on one side of the equation. Let's do that:

Subtract 3x from both sides:

5x - 3x - 9 = 3x - 3x 2x - 9 = 0

Add 9 to both sides:

2x - 9 + 9 = 0 + 9 2x = 9

Now, divide both sides by 2 to find the value of x:

x = 9 / 2 x = 4.5

2. 6x = 21

To solve this equation for x, divide both sides by 6:

6x / 6 = 21 / 6 x = 3.5

3. 2x = -12

To solve this equation for x, divide both sides by 2:

2x / 2 = -12 / 2 x = -6

4. x + 6 = 0

To solve this equation for x, subtract 6 from both sides:

x + 6 - 6 = 0 - 6 x = -6

5. 12x = 0

To solve this equation for x, divide both sides by 12:

12x / 12 = 0 / 12 x = 0

6. 15x = 15

To solve this equation for x, divide both sides by 15:

15x / 15 = 15 / 15 x = 1

So, the solutions for each equation are:

1. x = 4.5
2. x = 3.5
3. x = -6
4. x = -6
5. x = 0
6. x = 1