Question 16545
21x-8y=-1
9x+5y=8


Let's solve for X first

5(21x-8y=-1)
8(9x+5y=8)

Distribute.

105X-40Y=-5
72X+40Y=64

Add down

177X=59 ( the Y's cancel)


X=59/177
Now plug 59/177 in for X

9(59/177)+5y=8
513/177+5Y=8
5Y=301/59
Y=301/295