In high school we used to solve a system of equation like this:
x + y = 10
x - y = 5
----------------
x + y = 10
x = 5 + y
----------------
(5 + y) + y = 10
5 + 2y = 10
2y = 5
y = 2.5
x = 5 + 2.5 = 7.5
Now I would like to write an equation array like this:
\begin{eqnarray*}
x + y &=& 10\\
x ...
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- by twisterrob
- Sat Jan 17, 2009 9:33 pm
- Forum: Math & Science
- Topic: How to put a horizontal line in eqnarray
- Replies: 4
- Views: 20274
Search found 1 match
• Page 1 of 1
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