Question

7x+5y=124x+y=18Please guyWho can help? R​

Answer 1

Ответ и решение на фото!

Хорошего дня:)

Answer 2

It looks like you have a system of two linear equations with two variables, x and y:

1. 7x + 5y = 12
2. 4x + y = 18

You can solve this system of equations using various methods such as substitution, elimination, or matrix algebra. I'll demonstrate the elimination method here:

First, let's multiply the second equation by 5 so that the coefficients of y in both equations will cancel each other when we add them:

1. 7x + 5y = 12
2. 20x + 5y = 90

Now, subtract the second equation from the first:

(7x + 5y) - (20x + 5y) = 12 - 90

This simplifies to:

-13x = -78

Now, divide both sides by -13 to solve for x:

x = (-78) / (-13) x = 6

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

4x + y = 18 4(6) + y = 18 24 + y = 18

Subtract 24 from both sides to solve for y:

y = 18 - 24 y = -6

So, the solution to the system of equations is:

x = 6 y = -6

I hope this helps! If you have any more questions or need further assistance, please feel free to ask.