好難啊 ! 唔識呀 !

2006-12-22 10:45 pm
d老師有冇事呀?一次過比咁多數!

200y + 56 X 2 = 368

回答 (8)

2006-12-22 10:50 pm
✔ 最佳答案
200y + 56x2 = 368
200y + 112=368
200y = 368-112
200y = 256
y = 256/200
y = 1.28
2006-12-26 12:46 am
200y + 56 X 2 = 368
200y + 112 = 368
200y = 256
y = 1.28

2006-12-25 16:46:48 補充:
200y + 56 X 2 = 368 200y + 112 = 368200y = 256y = 1.28
2006-12-24 7:59 pm
見到上面的100個答案,我想提醒你們,其實只要驗算一下,就知道了。

200y+56x2=368
200y+112=368
200y=256
y=256/200
y=1 56/200
y=1 7/50
y=1.28

驗算:
200x1.28+56x2
=256+112
=368

2006-12-24 12:02:09 補充:
不是y=1 7/50,是y=1 7/25
參考: 小算盤和自己的思考
2006-12-22 11:19 pm
200y + 56 X 2 = 368

200y + 112=368

200y=368 -112

200y=256

y=2.56

2006-12-22 15:19:51 補充:
Sorry200y 56 X 2 = 368200y 112=368200y=368 -112200y=256y=1.28
參考: 數學能手Me
2006-12-22 11:08 pm
200y + 56 X 2 = 368

200y + 112 = 368

200y = 256

y = 1.28
2006-12-22 10:52 pm
200y + 56 X 2 = 368
200y+112=368
200y+112-112=368-112
200y=256
200y/200=256/200
y=1又25分之7
2006-12-22 10:50 pm
200y + 56x2 = 368
200y= 256
y=1.28
2006-12-22 10:49 pm
200y+56x2=368
200y+112=368
200y=256
y=256/200
y=32/25


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