更新1:
dont you need to minus 3 x on the right side also? in which case 3x+2 - 3x , would equal 2? so it woulud be 6x=2 And on the first equation, how is 6x even possible? 9x-3 if you subract 3x, wouldn't that be 9x?
dont you need to minus 3 x on the right side also? in which case 3x+2 - 3x , would equal 2? so it woulud be 6x=2 And on the first equation, how is 6x even possible? 9x-3 if you subract 3x, wouldn't that be 9x?
收錄日期: 2021-05-01 12:53:42
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https://hk.answers.yahoo.com/question/index?qid=20091202064101AAHldL2