Answers

2015-08-15T20:40:54+05:30
-3a+3b+8a-12a-2a+b
5a-12a-2a+4b
-9a+4b
0
2015-08-15T20:49:25+05:30
-3a + 3b + 4(-a) - 2a + b
-5a +4b -4a
-9a +4b
1 5 1
3a-4b is the write answer
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