SOLUTION: The solve the system using the Linear combination mathod. 21x-8y=-1 9x+5y=8
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Question 16545
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The solve the system using the Linear combination mathod.
21x-8y=-1
9x+5y=8
Answer by
kikerkins(17)
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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