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September 20, 2014

Homework Help: Math- Corrections

Posted by Chris on Monday, November 5, 2007 at 4:20pm.

(-9)-4w+7w=42

I thought I knew how to do this, but my teacher said i was wrong. This what I thought:

(-9)-4w+7w=42
(-9)-11w=42
+11w +11w
(-9)=42+11w
-42 -42
(-9)-42
(-9)+(-42)
11w=(-51)
/11 /11
w= 4.636363636363......

She told us that the correct answer is 17, but I could not find any way 17 could be the answer. Please help me with this and show me the correct way to do this.
Thank you so much.

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