Question

Which method is used in elimination to find the solutions of x + 3y = 9 and x - 3y = 8?

Answer 1

x=17/2 y=1/6

Explanation:

-1(x+3y=9)

1(x-3y=8)

_________

-x-3y=-9

x-3y=8

________

-6y/6=-1/6 y=1/6

x+3(1/6)=9

x+ 1/2=9

- 1/2 - 1/2

x=17/2