Answers

2016-01-07T19:50:51+08:00
Simply combine them.
2x + 3x = 5x

Just do the operation as usual. ☺ You don't have to do anything with the variable in addition and subtraction.
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2016-01-07T20:18:15+08:00
5x it is............................;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

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