SOLUTION: I am helping my daughter with Grade 7 math homework on Nth term equations. The question is Find n if the equation equals 20, -n +2. I think the answer is 22?

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Question 674892: I am helping my daughter with Grade 7 math homework on Nth term equations.
The question is Find n if the equation equals 20, -n +2.
I think the answer is 22?
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
-n + 2 = 20
...
cross%28-n%29+%2B+2+%2B+cross%28n%29+=+20+%2B+highlight%28n%29
2 = 20 + n
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2+-+highlight%2820%29+=+cross%2820%29+%2B+n+-+cross%2820%29
2 - 20 = n
...
n = -18
...
CHECK
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-(highlight%28-18%29) + 2 = 18 + 2 = 20
...
I am willing to help coach your daughter in math. email me at homeworkhelpers@readingboosters.com or visit www.MyHomeworkAnswers.com
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