Question

А) -4 + х = 2,8 б) 8,2 + y = -6 в) 5 - х = 1,7 г) 3 - у = -2,5 д) z + 0.4 = -1,33

Answer 1

а) -4 + х = 2,8

х = 2,8 - (-4)

х = 6,8

б) 8,2 + у = -6

у = -6 - 8,2

у = -14,2

в) 5 - х = 1,7

-х = 1,7 - 5

х = 3,3

г) 3 - у = -2,5

-у = -2,5 - 3

у = -5,5

д) z + 0,4 = -1,33

z = -1,33 - 0,4

z = -1,73

Answer 2

Пошаговое объяснение:

кажется 1 ответ 1,2     2 ответ 2,2    3 ответ 6,7     4 ответ 0,5 я  не уверена что правильно,

4 не могу                                                                                                                                            

Answer 3

Let's solve each of these equations step by step:

а) -4 + х = 2.8

To solve for x, we need to isolate x on one side of the equation.

Adding 4 to both sides, we get:

х = 2.8 + 4

Simplifying:

х = 6.8

б) 8.2 + y = -6

To solve for y, we need to isolate y on one side of the equation.

Subtracting 8.2 from both sides, we get:

y = -6 - 8.2

Simplifying:

y = -14.2

в) 5 - х = 1.7

To solve for x, we need to isolate x on one side of the equation.

Subtracting 5 from both sides, we get:

-х = 1.7 - 5

Simplifying:

-х = -3.3

To isolate x, we need to multiply both sides by -1 (since multiplying or dividing by a negative number reverses the inequality):

х = -1*(-3.3)

Simplifying:

х = 3.3

г) 3 - у = -2.5

To solve for y, we need to isolate y on one side of the equation.

Adding у to both sides, we get:

3 + у = -2.5

Subtracting 3 from both sides, we get:

у = -2.5 - 3

Simplifying:

у = -5.5

д) z + 0.4 = -1.33

To solve for z, we need to isolate z on one side of the equation.

Subtracting 0.4 from both sides, we get:

z = -1.33 - 0.4

Simplifying:

z = -1.73

So the solutions for the given equations are:

а) x = 6.8 б) y = -14.2 в) x = 3.3 г) y = -5.5 д) z = -1.73