Posted by hog tied on Saturday, November 13, 2010 at 12:36pm.
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
11x + 8y = 103
22x – 7y = 68

algebra  college  Jen, Saturday, November 13, 2010 at 1:45pm
11x+8y=103 (1)
22x7y=68 (2)
Multiply (1) by 2 to cancel the x's
2216y=206 (3)
22x7y=68 (2)
Add them together.
23y=138
Divide by 23
y=6
Now substitute y=6 into either equation (1) or (2) to solve for x.
Post your work and answer if you'd like it checked.

algebra  college  hog tied, Sunday, November 14, 2010 at 12:55pm
Hi Jen,
Okay here is what I got to solve for x
11x *6 + 8y = 72
66 + 8y
8y = 9
x = 9
Okay did I do this right?
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