Question

15у+X=370,5 X-4y=13,3​

Answer 1

Ответ:

решение системы на фото

надеюсь помог

Answer 2

To solve this system of linear equations:

1. 15y + x = 370.5
2. x - 4y = 13.3

You can use either the substitution method or the elimination method. I'll use the elimination method here.

First, let's get rid of the fractions by multiplying both sides of both equations by 10 to clear the decimals:

1. Multiply the first equation by 10: 10(15y + x) = 10(370.5) 150y + 10x = 3705

2. Multiply the second equation by 10: 10(x - 4y) = 10(13.3) 10x - 40y = 133

Now, you have the following system of equations:

1. 150y + 10x = 3705
2. 10x - 40y = 133

Next, we'll use the elimination method. We can see that if we subtract the second equation from the first equation, the x variable will cancel out:

(150y + 10x) - (10x - 40y) = 3705 - 133

Simplify the equation:

150y + 10x - 10x + 40y = 3705 - 133

Combine like terms:

190y = 3572

Now, divide both sides by 190 to solve for y:

y = 3572 / 190 y = 18.8

Now that we have the value of y, we can substitute it back into one of the original equations to solve for x. Let's use the first equation:

15y + x = 370.5

15(18.8) + x = 370.5

282 + x = 370.5

Now, subtract 282 from both sides to solve for x:

x = 370.5 - 282 x = 88.5

So, the solution to the system of equations is:

x = 88.5 y = 18.8