一條代數題;
b
-- － ( 5 - b ) =3
3
我數學差,唔識計,幫下我!thz!=]
想問一條數學題...快快快!=]
2006-12-05 8:13 am
回答 (8)
2006-12-05 8:19 am
✔ 最佳答案
b/3 -5+b=3b-15+3b=9
4b=24
b=6
2006-12-07 1:53 am
by them
2006-12-06 12:36 am
b/3-5+b=3
b/3+b=8
4/3b=8
b=6
b/3+b=8
4/3b=8
b=6
2006-12-05 11:26 am
b
-- － ( 5 - b ) =3
3
3(b/3)-3(5-b)=3(3)
b-15+3b=9
4b=9+15
b=24/4
b=6
-- － ( 5 - b ) =3
3
3(b/3)-3(5-b)=3(3)
b-15+3b=9
4b=9+15
b=24/4
b=6
2006-12-05 9:05 am
b
-- － ( 5 - b ) =3
3
b - (5 - b ) = 3 x 3
b - ( 15 - 3b ) = 9
b - 15 + 3b = 9
b + 3b = 9 + 15
4b = 24
b = 6
-- － ( 5 - b ) =3
3
b - (5 - b ) = 3 x 3
b - ( 15 - 3b ) = 9
b - 15 + 3b = 9
b + 3b = 9 + 15
4b = 24
b = 6
2006-12-05 8:37 am
b
-- 減 ( 5 - b ) = 3
3
b ( 5 - b )
-- 減 ---------- = 3
3 1
通分母
b 3( 5 - b )
-- 減 ------------- = 3
3 1 x 3
b 15 - 3b
-- 減 ----------- = 3
3 3
負負得正
b - 15 + 3b
---------------- = 3
3
4b - 15
---------- x 3 = 3 x 3
3
4b - 15 = 9
4b = 24
b = 6
ok??
-- 減 ( 5 - b ) = 3
3
b ( 5 - b )
-- 減 ---------- = 3
3 1
通分母
b 3( 5 - b )
-- 減 ------------- = 3
3 1 x 3
b 15 - 3b
-- 減 ----------- = 3
3 3
負負得正
b - 15 + 3b
---------------- = 3
3
4b - 15
---------- x 3 = 3 x 3
3
4b - 15 = 9
4b = 24
b = 6
ok??
2006-12-05 8:28 am
b
-- － ( 5 - b ) =3
3
b - (5 - b ) *3 = 3 * 3
--
3
b - ( 15 - 3b ) = 9
b - 15 + 3b = 9
b + 3b = 9 + 15
4b = 24
b = 6
-- － ( 5 - b ) =3
3
b - (5 - b ) *3 = 3 * 3
--
3
b - ( 15 - 3b ) = 9
b - 15 + 3b = 9
b + 3b = 9 + 15
4b = 24
b = 6
2006-12-05 8:23 am
b/3 - 5+d =3
b/3 + b =3+5
b + 3b =8 x3
4b =24
b = 6
b/3 + b =3+5
b + 3b =8 x3
4b =24
b = 6
收錄日期: 2021-04-12 18:15:29
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