Question

4,5-8,3= 5(-20)*(-0,2)= Решите уровнения 1)5,23+x=-7,24 2)y-2 5/12=-3 7/15 3)8,4-(x-3,6)=18

Answer 1

1) 5,23+x=-7,24

 x=-7,24 - 5,23

 x=12,47

Answer 2

Let's solve the equations one by one:

1. 5.23 + x = -7.24

To solve for x, we need to isolate it on one side of the equation. To do that, we'll move 5.23 to the other side by subtracting it from both sides:

x = -7.24 - 5.23 x = -12.47

So the solution for this equation is x = -12.47.

2. y - (2 5/12) = -3 7/15

To solve for y, we need to isolate it on one side of the equation. To do that, we'll move (2 5/12) to the other side by adding it to both sides:

y = -3 7/15 + 2 5/12

To add these fractions, we need to find a common denominator, which is 60:

y = (-45/15) + (25/12) y = (-3) + (25/12)

Now, let's convert -3 to a fraction with a denominator of 12:

y = (-36/12) + (25/12) y = (-36 + 25) / 12 y = -11 / 12

So the solution for this equation is y = -11/12.

3. 8.4 - (x - 3.6) = 18

To solve for x, we need to first remove the parentheses. To do that, distribute the negative sign:

8.4 - x + 3.6 = 18

Now, let's isolate x on one side by moving the constants to the other side:

x = 8.4 + 3.6 - 18 x = 12 - 18 x = -6

So the solution for this equation is x = -6.

Note: In the above calculations, I have used the decimal point notation for the numbers as it is more common and avoids confusion with the comma as a decimal separator. If you meant something different by using commas in your original equations, please let me know.