Question

Solve the following system of equations.

-2x + 4y = 70
x + 5y = 28
@KamiBug

Answer 1

Solve the second equation for the value of x.
Then take that value and substitute it for x in the first equation so that you can solve it for y.
Once you know what y is, substitute the value of y into the second equation to find x.

x + 5y = 28
x = 28 - 5y

-2x + 4y = 70
-2(28-5y) + 4y = 70
-56 + 10y + 4y = 70
14y = 126
y = 9 <---

x + 5(9) = 28
x + 45 = 28
x = ?

Hope this helps! :)

Answer 2

thank you

Answer 3

Sure ^.^