=5x/(5(2X+Y)) – (11x+3y)/(5(2x+y))
咁5x-11x+3y
= -6x+3y/5(2x+y)
之後都吾知點約可以得到-3/5
我試過-3(2x-y) 但係到下面將吾到,加多個-又變左+3(y-2x)
求大家幫幫忙 係yahoo度問過,點知都係無聊答案
有人話3x(2x+3)/5(2x+y)......好無奈
中二級數學題化簡後吾知點約
2008-10-15 4:29 am
回答 (3)
2008-10-15 5:42 am
5x/(5(2X+Y)) – (11x+3y)/(5(2x+y))
5x-(11x+3y)=5x-11x-3y 唔係 5x-11x+3y
=-6x-3y/5(2x+y)
=-3(2x+y)/5(2x+y)
=-3/5
5x-(11x+3y)=5x-11x-3y 唔係 5x-11x+3y
=-6x-3y/5(2x+y)
=-3(2x+y)/5(2x+y)
=-3/5
2008-10-15 4:35 am
5x/(5(2X+Y)) – (11x+3y)/(5(2x+y))
= 5x-11x+3y
= -6x+3y/5(2x+y)
= -3(2x-y)/5(2x+y)
= 3(2x+y)/5(2x+y)
(2x+y)相約
答案應該= 3/5 先岩.冇左( - )架啦'
= 5x-11x+3y
= -6x+3y/5(2x+y)
= -3(2x-y)/5(2x+y)
= 3(2x+y)/5(2x+y)
(2x+y)相約
答案應該= 3/5 先岩.冇左( - )架啦'
收錄日期: 2021-04-18 15:17:30
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