Question

1 ) 2x = 18 - x ; 2 ) 7x + 3 = 30-2x ; 3 ) 7-2x = 3x -18 ;

Answer 1

Ответ:

1) - 3x = 18, x=18/-3, x=-6

2) - 5x=-25, x= -25/-5, x=5

3) 2x=-18, =x - 18/-2, x=9

Объяснение:

Answer 2

Let's solve each of these equations one by one:

1. 2x = 18 - x

First, let's get all the x terms on one side and the constants on the other side. To do that, we'll add x to both sides:

2x + x = 18

This simplifies to:

3x = 18

Now, to solve for x, divide both sides by 3:

3x/3 = 18/3

x = 6

So, the solution to the first equation is x = 6.

2. 7x + 3 = 30 - 2x

First, let's get all the x terms on one side and the constants on the other side. To do that, we'll add 2x to both sides:

7x + 2x + 3 = 30

This simplifies to:

9x + 3 = 30

Next, let's isolate the x terms by subtracting 3 from both sides:

9x = 30 - 3

9x = 27

Now, to solve for x, divide both sides by 9:

9x/9 = 27/9

x = 3

So, the solution to the second equation is x = 3.

3. 7 - 2x = 3x - 18

First, let's get all the x terms on one side and the constants on the other side. To do that, we'll add 2x to both sides:

7 - 2x + 2x = 3x - 18 + 2x

This simplifies to:

7 = 5x - 18

Now, let's isolate the x terms by adding 18 to both sides:

7 + 18 = 5x

25 = 5x

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

25/5 = 5x/5

5 = x

So, the solution to the third equation is x = 5.