數學方程式

2006-10-15 4:07 am

32+x=5(4+x)
thanks!!!!!!!!!!

回答 (7)

2006-10-15 4:28 am

✔ 最佳答案

32+x=5(4+x)
32+x=5(4)+5x [32+x=5*4+5x]
32+x=20+5x
32-20=5x-x
12=4x
12/4=x
3=x
x=3

PS: ( )可以是乘的意思.

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2006-10-15 7:13 pm

32+x=5(4+x)
32+x=20+5x
4x=12
x=3

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2006-10-15 6:19 pm

32+x=5(4+x)
32+x=(5)(4)+(5)(x)
32+x=20+5x
32-20=5x-x
12=4x
x=3

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2006-10-15 4:27 am

=3_________

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2006-10-15 4:13 am

唔係好難：
32+x=5(4+x)
32+x=20+5x
32-20=5x-x
12=4x
3=x
x=3

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2006-10-15 4:12 am

32+x=5(4+x)
32+x=20+5x
4x=12
x=3

參考: me

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2006-10-15 4:12 am

32+x=5(4+x)
32+x=(5)(4)+(5)(x)
32+x=20+5x
32-20=5x-x
12=4x
x=3

參考: me

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