標題:
發問:
４０＋６０（１５００－ｘ）＝８００００
最佳解答:
我都係中一呀 !! 40 + 60 ( 1500 - x ) = 80000 100 ( 1500 - x ) = 80000 100 ( 1500 - x ) * 100 = 80000 * 100 1500 - x = 800 1500 - x + x = 800 + x 1500 = 800 + x 1500 - 800 = 800 + x -800 700 = x x = 700 2006-11-22 21:18:46 補充： 送埋 checking 比你 !!呢個係我學校寫法 !!Checking : sub. x = 700 into the eqt.L.H.S = 40 + 60 ( 1500 - x )=100 ( 1500 - 700 )=100 ( 800 )= 80000= R.H.S 2006-11-22 21:20:41 補充： Checking 留左最後個句 !!Checking : sub. x = 700 into the eqt.L.H.S = 40 + 60 ( 1500 - x )=100 ( 1500 - 700 )=100 ( 800 )= 80000= R.H.S∴ x = 700 is the solution of the eqt.
其他解答:
40+90000-60x=80000 -60x=80000-40-90000 -60x=-10040 60x=10040 x=10040/60 x=502/3|||||40+90000-60x=80000 10040=60x 1004=6x x=502/3
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＜急＞一題中一數．．．＞＜唔該啦＞＜ｔｈｘｔｈｘｔｈｘ發問:
４０＋６０（１５００－ｘ）＝８００００
最佳解答:
我都係中一呀 !! 40 + 60 ( 1500 - x ) = 80000 100 ( 1500 - x ) = 80000 100 ( 1500 - x ) * 100 = 80000 * 100 1500 - x = 800 1500 - x + x = 800 + x 1500 = 800 + x 1500 - 800 = 800 + x -800 700 = x x = 700 2006-11-22 21:18:46 補充： 送埋 checking 比你 !!呢個係我學校寫法 !!Checking : sub. x = 700 into the eqt.L.H.S = 40 + 60 ( 1500 - x )=100 ( 1500 - 700 )=100 ( 800 )= 80000= R.H.S 2006-11-22 21:20:41 補充： Checking 留左最後個句 !!Checking : sub. x = 700 into the eqt.L.H.S = 40 + 60 ( 1500 - x )=100 ( 1500 - 700 )=100 ( 800 )= 80000= R.H.S∴ x = 700 is the solution of the eqt.
其他解答:
40+90000-60x=80000 -60x=80000-40-90000 -60x=-10040 60x=10040 x=10040/60 x=502/3|||||40+90000-60x=80000 10040=60x 1004=6x x=502/3
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