f.1 maths

2007-08-01 4:32 am

simplify
(3a+b-4c)-(2a-5b)-(6b+5c)

回答 (4)

2007-08-01 4:35 am

✔ 最佳答案

(3a+b-4c)-(2a-5b)-(6b+5c)
=3a+b-4c-2a+5b-6b-5c
=a-9c

參考: me

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2007-08-02 2:13 am

(3a+b-4c)-(2a-5b)-(6b+5c)
=3a+b-4c-2a+5b-6b-5c
=3a-2a+b+5b-6b-4c-5c
=a-9c (done!)

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2007-08-01 8:28 am

(3a+b-4c)-(2a-5b)-(6b+5c)
= 3a+b-4c-2a+5b-6b-5c
= 3a-2a+b+5b-6b-4c-5c
= a-9c

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2007-08-01 4:35 am

(3a+b-4c)-(2a-5b)-(6b+5c)
=3a+b-4c-2a+5b-6b-5c
=a-9c

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