Question

Use elimination to solve the system of equations.
5x + 13y = 20
– 5x – 3y = 30

Answer 1

y = 5

x = -9

Explanation:

5x + 13y = 20

-5x - 3y = 30

5x - 5x = 0

13y - 3y = 10y

20 + 30 = 50

10y = 50

y = 5

~~~~~~~~~~~~~~

5x + 13(5) = 20

-5x - 3(5) = 30

5x + 65 = 20

-5x - 15 = 30

5x = -45

-5x = 45

x = -9