Question

4) 13x + 27 = 16x + 4,5;5) 21x + 45 = 17 + 14x;6) 13x + 70 = 2x + 15.​

Answer 1

Ответ:

Пошаговое объяснение:

4) 13x + 27 = 16x + 4,5

   -3х=-22,

     х= 7,5

5) 21x + 45 = 17 + 14x

   7х=-28

    х= -4

6) 13x + 70 = 2x + 15

    11х= -55

      х= - 5

Answer 2

Ответ:

Пошаговое объяснение:

         

Answer 3

Let's solve these equations one by one:

4. 13x + 27 = 16x + 4.5

To solve for x, you want to isolate x on one side of the equation. Start by moving all terms involving x to one side and constants to the other side:

13x - 16x = 4.5 - 27

Now, simplify:

-3x = -22.5

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

x = (-22.5) / (-3) x = 7.5

So, the solution to the equation is x = 7.5.

5. 21x + 45 = 17 + 14x

Again, move all terms involving x to one side and constants to the other side:

21x - 14x = 17 - 45

Simplify:

7x = -28

Now, divide both sides by 7 to solve for x:

x = (-28) / 7 x = -4

The solution to this equation is x = -4.

6. 13x + 70 = 2x + 15

Once more, move all terms involving x to one side and constants to the other side:

13x - 2x = 15 - 70

Simplify:

11x = -55

Now, divide both sides by 11 to solve for x:

x = (-55) / 11 x = -5

So, the solution to this equation is x = -5.