Question

1)0,4x+3=0,2x. 2)-0,5x-16=0,3x. 3)-1,1-x=-9x-33,1. 4)4,5-7x=4,9-11x​

Answer 1

Ответ:

Пошаговое объяснение:

1.

0,4х + 3 = 0,2х

0,4х - 0,2х = - 3

0,2х = - 3

х = - 3 : 0,2

х = -15

2.

-0,5х - 16 = 0,3х

-0,5х - 0,3х = 16

-0,8х = 16

х = 16 : (-0,8)

х = -20

3.

-1,1 - х = -9х - 33,1

-х + 9х = -33,1 + 1,1

8х = - 32

х = -32 : 8

х = - 4

4.

4,5 - 7х = 4,9 - 11х

-7х + 11х = 4,9 - 4,5

4х = 0,4

х = 0,4 : 4

х = 0,1

Answer 2

Ответ:

1) 0,4х-0,2х= -3

0,2х = -3

х = -15

2)-0,5х-0,3х= 16

-0,8х= 16

Х= - 20

3)-х -9х= -33,1+1,1

-10х = - 32

х= 3,2

4) -7х+11х=4,9-4,5

4х= 0,4

х= 0,1

Answer 3

To solve these linear equations, you'll want to isolate the variable (usually represented as "x"). Here are the solutions for each equation:

1. 0.4x + 3 = 0.2x

First, subtract 0.2x from both sides of the equation to isolate the x term:

0.4x - 0.2x + 3 = 0.2x - 0.2x 0.2x + 3 = 0

Now, subtract 3 from both sides to solve for x:

0.2x + 3 - 3 = 0 - 3 0.2x = -3

Finally, divide both sides by 0.2 to find the value of x:

(0.2x) / 0.2 = (-3) / 0.2 x = -15

So, the solution to the first equation is x = -15.

2. -0.5x - 16 = 0.3x

First, add 0.5x to both sides of the equation to isolate the x term:

-0.5x + 0.5x - 16 = 0.3x + 0.5x -16 = 0.8x

Now, divide both sides by 0.8 to find the value of x:

-16 / 0.8 = 0.8x / 0.8 x = -20

So, the solution to the second equation is x = -20.

3. -1.1 - x = -9x - 33.1

First, add x to both sides of the equation to isolate the x term:

-1.1 - x + x = -9x + x - 33.1 -1.1 = -8x - 33.1

Now, add 33.1 to both sides:

-1.1 + 33.1 = -8x - 33.1 + 33.1 32 = -8x

Finally, divide both sides by -8 to find the value of x:

32 / -8 = (-8x) / -8 x = -4

So, the solution to the third equation is x = -4.

4. 4.5 - 7x = 4.9 - 11x

First, add 11x to both sides of the equation to isolate the x term:

4.5 - 7x + 11x = 4.9 - 11x + 11x 4.5 + 4x = 4.9

Now, subtract 4.5 from both sides:

4.5 + 4x - 4.5 = 4.9 - 4.5 4x = 0.4

Finally, divide both sides by 4 to find the value of x:

(4x) / 4 = 0.4 / 4 x = 0.1

So, the solution to the fourth equation is x = 0.1.