Question

(x-4,7)*7,3=38,69 (3,6-a)*5,8=14,5

Answer 1

(х-4,7)*7,3=38,69

х-4,7=38,69:7,3

х-4,7=5,3

х=5,3+4,7

х=10

проверка

(10-4,7)*7,3=38,69

5.3*7,3=38,69

38,69=38,69

=================================

(3,6-а)*5,8=14,5

3,6-а=14,5:5,8

3,6-а=2,5

а=3,6-2,5

а=1,1

проверка

(3,6-1,1)*5,8=14,5

2,5*5,8=14,5

14,5=14,5

Answer 2

(x-4,7)*7,3=38,69

7,3х-34,31=38,69

7,3х=73

х=10

 

(3,6-a)*5,8=14,5

20,88-5,8а=14,5

-5,8а=-6,38

а=1,1

   

Answer 3

It appears you've written a system of equations. Let's solve these equations for the variables 'x' and 'a'.

1. (x - 4) * 7.3 = 38.69

To solve for 'x', you can start by isolating 'x' on one side of the equation. Divide both sides by 7.3:

(x - 4) = 38.69 / 7.3 (x - 4) ≈ 5.3055

Now, add 4 to both sides to isolate 'x':

x ≈ 5.3055 + 4 x ≈ 9.3055

So, the solution for 'x' is approximately x ≈ 9.3055.

2. (3.6 - a) * 5.8 = 14.5

To solve for 'a', you can start by isolating 'a' on one side of the equation. Divide both sides by 5.8:

(3.6 - a) = 14.5 / 5.8 (3.6 - a) ≈ 2.5

Now, subtract 3.6 from both sides to isolate 'a':

-a ≈ 2.5 - 3.6 -a ≈ -1.1

Finally, multiply both sides by -1 to solve for 'a':

a ≈ -(-1.1) a ≈ 1.1

So, the solution for 'a' is approximately a ≈ 1.1.