Question

(10,49-x) ÷4.02 =0.805.(y+26.1)×2.3=70.8.

Answer 1

Ответ:

10-2.4x=3.16

-2,4х=3,16-10

-2,4х=-6,84

х=-6,84:(-2,4)

х=2,85

 

(y+26.1)*2.3=70.84

у+26,1=70,84:2,3

у+26,1=30,8

у=30,8-26,1

у=4,7

Answer 2

To solve the system of equations:

1. (10, 49 - x) / 4.02 = 0.805
2. 2.3 * (y + 26.1) = 70.8

We'll start with the second equation:

2.3 * (y + 26.1) = 70.8

First, divide both sides by 2.3 to isolate (y + 26.1):

y + 26.1 = 70.8 / 2.3

y + 26.1 = 30.7826087

Now, subtract 26.1 from both sides to solve for y:

y = 30.7826087 - 26.1

y ≈ 4.6826

Now, we have the value of y. Let's substitute this value into the first equation:

(10, 49 - x) / 4.02 = 0.805

Now, solve for x. First, multiply both sides by 4.02 to isolate (10, 49 - x):

10, 49 - x = 0.805 * 4.02

10, 49 - x ≈ 3.2261

Now, subtract 3.2261 from both sides to solve for x:

x ≈ 10, 49 - 3.2261

x ≈ 10, 45.7639

So, the solution to the system of equations is approximately:

x ≈ 10, 45.7639 y ≈ 4.6826