Question

1) (x – 4,7) – 2,8 = 5,9; 2) (y – 4,42) + 7,18 = 24,3; 3) 5,42 – (у – 9,37) = 1,18.

Answer 1

1) (x-4,7)-2,8=5,9

x-4,7=5,9+2,8

x-4,7=8,7

x=8,7+4,7

x=13,4

2)(y – 4,42) + 7,18 = 24,3

y – 4,42=24,3-7,18

y-4,42=17,12

y=17,12+4,42

y=21,54

3)5,42 – (у – 9,37) = 1,18

у – 9,37=5,42-1,18

y-9,37=4,24

y=4,24+9,37

y=13,61

Answer 2

Ответ:

$x - 4.7 = 5.9+ 2.8 \\ = 5.9 + 2.8 + 4.7 \\ x = 13.4$

Answer 3

Let's solve each equation step by step:

1. (x – 4.7) – 2.8 = 5.9

First, let's simplify the equation by performing the subtraction inside the parentheses:

x - 4.7 - 2.8 = 5.9

Now, combine like terms:

x - 7.5 = 5.9

Next, isolate the variable x by adding 7.5 to both sides of the equation:

x - 7.5 + 7.5 = 5.9 + 7.5

This simplifies to:

x = 13.4

Therefore, the solution to the equation is x = 13.4.

2. (y – 4.42) + 7.18 = 24.3

Start by simplifying the equation:

y - 4.42 + 7.18 = 24.3

Combine like terms:

y + 2.76 = 24.3

Next, isolate the variable y by subtracting 2.76 from both sides of the equation:

y + 2.76 - 2.76 = 24.3 - 2.76

This simplifies to:

y = 21.54

So, the solution to the equation is y = 21.54.

3. 5.42 – (у – 9.37) = 1.18

First, simplify the equation by performing the subtraction inside the parentheses:

5.42 - (у - 9.37) = 1.18

Distribute the negative sign to the terms inside the parentheses:

5.42 - у + 9.37 = 1.18

Combine like terms:

14.79 - у = 1.18

Next, isolate the variable у by subtracting 14.79 from both sides of the equation:

14.79 - у - 14.79 = 1.18 - 14.79

This simplifies to:

-у = -13.61

To solve for у, divide both sides of the equation by -1:

(-у) / (-1) = (-13.61) / (-1)

This gives:

у = 13.61

Therefore, the solution to the equation is у = 13.61.