1) h-[2(h-1)+10]=5(h-34)
2) s+1/3+s-1/7=-6
( / <--哩個係分數)
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唔該曬。﹏。
我想問下f.1 maths
2008-10-16 3:50 am
回答 (3)
2008-10-16 3:58 am
2008-10-16 6:01 pm
1. h-[2(h-1)+10]=5(h-34)
h-[2(h-1)+10]=5h-170
-2(h-1)-10=5h-h-170
-2h+2-10=4h-170
-162=6h
-162/6=h
h=-27
2. s+1/3+s-1/7=-6
s+1/3+s+6=1/7
(3+s)s+1/3+s+6(3+s)=3+s/7
s+1+6s+18=3+s/7
7s+19=3+s/7
(7)7s+19=(7)3+s/7
49s+133=3+s
50s=-130
s=-130/50
s=-26
Hope I can help you.
h-[2(h-1)+10]=5h-170
-2(h-1)-10=5h-h-170
-2h+2-10=4h-170
-162=6h
-162/6=h
h=-27
2. s+1/3+s-1/7=-6
s+1/3+s+6=1/7
(3+s)s+1/3+s+6(3+s)=3+s/7
s+1+6s+18=3+s/7
7s+19=3+s/7
(7)7s+19=(7)3+s/7
49s+133=3+s
50s=-130
s=-130/50
s=-26
Hope I can help you.
參考: my maths knowledge
2008-10-16 4:01 am
h-[2(h-1)+10]=5(h-34)
h-[2(h-1)+10]=5h-170
-2(h-1)-10=5h-h-170
-2h+2-10=4h-170
-162=6h
-162/6=h
-27=h
s+1/3+s-1/7=-6
s+1/3+s+6=1/7
(3+s)s+1/3+s+6(3+s)=3+s/7
s+1+6s+18=3+s/7
7s+19=3+s/7
(7)7s+19=(7)3+s/7
49s+133=3+s
50s=-130
s=-130/50
s=-26
h-[2(h-1)+10]=5h-170
-2(h-1)-10=5h-h-170
-2h+2-10=4h-170
-162=6h
-162/6=h
-27=h
s+1/3+s-1/7=-6
s+1/3+s+6=1/7
(3+s)s+1/3+s+6(3+s)=3+s/7
s+1+6s+18=3+s/7
7s+19=3+s/7
(7)7s+19=(7)3+s/7
49s+133=3+s
50s=-130
s=-130/50
s=-26
收錄日期: 2021-04-19 20:34:48
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https://hk.answers.yahoo.com/question/index?qid=20081015000051KK01652