Question

Someone please answer quick!!

Answer 1

To solve the given set of equations A. we multiply the first equation by -7 and then add the two equations.

Explanation:

Step 1:

`x+y=5,` take this as equation 1,

`7x+8y=37,` take this as equation 2.

If we multiply equation 1 with -7 and add the resulting equation with equation 2, we can eliminate the x variable and determine the value of y.

`-7(x+y)= -7(5), -7x-7y=-35,` take this as equation 3.

Step 2:

Adding equation 2 and 3 we get

`y =2.`

Now, we substitute the value of y in any of the previous equations to determine the value of x.

If we substitute
`y =2` in equation 1, we get

`x+y=5, x+2 =5, x=3.`

So for the given set of equations,
`x=3` and
`y=2.`

So to solve the given set of equations, we multiply the first equation by -7 and then add the two equations.