Question

1) 2-(5,2+х)=12-(х+0,6)-10 2) 0,2х-4=20-0,2х 3) 8х-7+3х-21=х+10

Answer 1

Ответ:

у першому і другому розв'язку не буде

у третьому буду 3.8

Пошаговое объяснение:

на фото

Answer 2

Let's solve these equations step by step:

1. 2 - (5.2 + x) = 12 - (x + 0.6) - 10

First, simplify the expressions inside the parentheses:

2 - 5.2 - x = 12 - x - 0.6 - 10

Now, perform the subtraction:

-3.2 - x = 1.4 - x - 10

Next, add x to both sides to isolate the x terms:

-3.2 = 1.4 - 10

Now, subtract 1.4 from both sides:

-3.2 - 1.4 = -10

-4.6 = -10

Now, divide both sides by -1 to solve for x:

x = -4.6 / -1

x = 4.6

So, the solution to the first equation is x = 4.6.

2. 0.2x - 4 = 20 - 0.2x

First, add 0.2x to both sides to isolate the x terms:

0.2x + 0.2x - 4 = 20

Combine like terms:

0.4x - 4 = 20

Now, add 4 to both sides:

0.4x = 20 + 4

0.4x = 24

Now, divide both sides by 0.4 to solve for x:

x = 24 / 0.4

x = 60

So, the solution to the second equation is x = 60.

3. 8x - 7 + 3x - 21 = x + 10

First, combine like terms on both sides:

(8x + 3x) - 7 - 21 = x + 10

11x - 28 = x + 10

Now, subtract x from both sides to isolate the x terms:

11x - x - 28 = 10

10x - 28 = 10

Next, add 28 to both sides:

10x - 28 + 28 = 10 + 28

10x = 38

Now, divide both sides by 10 to solve for x:

x = 38 / 10

x = 3.8

So, the solution to the third equation is x = 3.8.