Posted by **Kristin** on Saturday, March 13, 2010 at 5:37pm.

1)

x+8y=33

-x+4y=3

I need help solving this one using the elimination method!

- math -
**Alan**, Saturday, March 13, 2010 at 5:42pm
x+8y=33 ---- (1)

-x+4y=3 ---- (2)

(1) + (2),

x + 8y + (-x + 4y) = 33 + 3

12y = 36

y = 3

sub y = 3 into (2),

-x + 4(3) = 3

-x = 3 - 12

-x = -9

x = 9

CHECK: sub x = 9 and y = 3 into (1),

9 + 8(3) = 33

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