What does x and y equal in y=x+5 and 3x+y=25

The values x and y are determined when we use the substitution method.

y = x + 5

Apply eh value of y into the equation to solve for x.

3x + y = 25

3x + x + 5 = 25

Combine like terms

3x + x = 4x

4x + 5 = 25

-5 - 5 4x = 20

4x/4 = 20/4

x = 20/4

x = 5

Now we know the value of x, and we need to solve for y.

y = x + 5

y = 5 + 5

y = 10

10 = 10

Now we know both of these values.

Answer:

x = 5

y = 10