Question

8+4(х-2)=-10-х =2(5-2х)-(х+1)=-6 =3-7х=-5(х+3) =​

Answer 1

Ответ:

Пошаговое объяснение:

8 + 4(х-2) = -10 - х

8 + 4х - 8 = -10 - х

4х + х = -10 - 8 + 8

5х = -10

х = -10 : 5

х = -2

2(5 - 2х) - (х + 1) = -6

10 - 4х - х - 1 = -6

-4х - х = -6 - 10 + 1

-5х = -15

х = -15 : (-5)

х = 3

3 - 7х = -5(х + 3)

3 - 7х = -5х - 15

-7х + 5х = -15 - 3

-2х = -18

х = -18 : (-2)

х = 9

Answer 2

(Первое) -2
(Второе) 3
(Третье) 9

Answer 3

To solve these equations, you'll need to perform the necessary operations to isolate the variable x. Let's work through each equation one by one:

1. 8 + 4(x - 2) = -10 - x

First, distribute the 4 on the left side of the equation: 8 + 4x - 8 = -10 - x

Now, combine like terms: 4x = -10 - x - 8 4x + x = -18

Combine the x terms: 5x = -18

Now, isolate x by dividing both sides by 5: x = -18/5

2. 2(5 - 2x) - (x + 1) = -6

First, distribute the 2 on the left side of the equation and simplify: 10 - 4x - (x + 1) = -6

Now, distribute the negative sign inside the parentheses: 10 - 4x - x - 1 = -6

Combine like terms: 10 - 5x - 1 = -6

Combine constants: 9 - 5x = -6

Subtract 9 from both sides to isolate the variable: -5x = -6 - 9 -5x = -15

Now, divide both sides by -5 to solve for x: x = 3

3. 3 - 7x = -5(x + 3)

First, distribute the -5 on the right side of the equation: 3 - 7x = -5x - 15

Now, get the x terms on one side and constants on the other side: -7x + 5x = -15 - 3

Combine like terms: -2x = -18

Divide both sides by -2 to solve for x: x = 9

So, the solutions to the three equations are:

1. x = -18/5
2. x = 3
3. x = 9