Jawabanmu

Jawaban paling cerdas!
2014-08-20T21:07:53+07:00
2014-08-20T21:34:42+07:00
1. 4b+5a-7b-2a-3b
=4b-7b-3b+5a-2a
=3a

2. 7y+3x(4y-x)-5y (1-x)+5x'2
=7y×4y-5y+3x-x+5x'2
=23y+7x'2