Question

(1)5x-18=3x (2)-7x+20=6 (3)10x-9=17+6x

Answer 1

Ответ:

1)9

2)2

3)6,5

Пошаговое объяснение:

1)2x=18

x=9

2)7x=14

x=2

3)4x=26

x=6,5

Answer 2

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

(1) 5x - 18 = 3x

To solve for x, we need to isolate the x variable on one side of the equation. We can do this by subtracting 3x from both sides:

5x - 3x - 18 = 3x - 3x 2x - 18 = 0

Next, we can add 18 to both sides of the equation to eliminate the -18 term:

2x - 18 + 18 = 0 + 18 2x = 18

Now, divide both sides by 2 to solve for x:

2x/2 = 18/2 x = 9

So the solution to the equation is x = 9.

(2) -7x + 20 = 6

To solve for x, we'll start by isolating the x variable. We can do this by subtracting 20 from both sides of the equation:

-7x + 20 - 20 = 6 - 20 -7x = -14

Next, divide both sides by -7 to solve for x:

(-7x)/(-7) = (-14)/(-7) x = 2

So the solution to the equation is x = 2.

(3) 10x - 9 = 17 + 6x

To solve for x, we'll first simplify the equation by combining like terms. We'll bring all the x terms to one side and the constant terms to the other side:

10x - 6x = 17 + 9 4x = 26

Now, divide both sides by 4 to solve for x:

(4x)/4 = 26/4 x = 6.5

So the solution to the equation is x = 6.5.