Respuesta :

cittenkatgirl

Answer:

x = 10, y = 30

Step-by-step explanation:

Since this already has a y-value, which is 3x, we will use substitution.

3x + 7x = 10

10x = 10

x = 10

Now that we know x, we can figure out what y is.

y = 3(10)

y = 30

Answer:

x = 1, y = 3

Step-by-step explanation:

easy