4(x-4)=2x-4=?????????

2007-08-23 8:02 pm

救我做~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

回答 (4)

2007-08-23 8:06 pm

✔ 最佳答案

4X - 16 = 2X - 4
4X - 2X = 16 - 4
2X = 12
x = 12/2
x = 6

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2007-08-23 8:45 pm

4X - 16 = 2X - 4
4X - 2X = 16 - 4
2X = 12
x = 12/2
x = 6

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2007-08-23 8:16 pm

4(x-4)=2x-4
4x-16=2x-4
4x-2x=-4+16
2x=12
x=6

做法:
先將括號拆開
把有未知數的項調在等於的一邊
把常數項(沒有未知數)調在等於的另一邊
加以運算~完成!

參考: my maths

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2007-08-23 8:13 pm

4(x-4) = 2x - 4
4x -16 =2x - 4
4x-2x = -4+16
2x = 12
x = 6

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