Question

Solve the system using elimination

2x+3y=9
x+5y=8

A.(0,3)
B.(-2,2)
C.(-1/2,10/3)
D.(3,1)

Answer 1

2x + 3y = 9
x + 5y = 8....multiply by -2
----------------
2x + 3y = 9
-2x - 10y = -16 (result of multiplying by -2)
---------------add
-7y = - 7
y = -7/-7
y = 1

x + 5y = 8
x + 5(1) = 8
x + 5 = 8
x = 8 - 5
x = 3

solution is (3,1)