3份之1=9份之5-F
1=2份之1+3份之G
c=2份之1c=3
列式
2007-10-08 13:52:12 · 5 個解答 · 發問者 ? 6 in 科學 ➔ 數學
1. 1/3=5f/9
1*9=3*5f
9=15f
f=9/15
f=3/5
2. 1=1/2+g/3
1=3/6+2g/6
1=3+2g/6
1*6=3+2g
3=2g
g=1.5
2007-10-08 14:05:03 · answer #1 · answered by ? 4 · 0⤊ 0⤋
3\1=9\5F
1=2\1+3\G
c=2\c=3
2007-10-08 14:24:33 · answer #2 · answered by ? 2 · 0⤊ 0⤋
3.C=3
2007-10-08 14:01:59 · answer #3 · answered by raymond123 3 · 0⤊ 0⤋
1:
1/3=5-F/9
1X3/3X3=5-F/9
3/9=5-F/9
3=5-F
F=2
2:
1/2+G/3=1
3/6+2G/6=1
G=1.5
2007-10-08 13:58:27 · answer #4 · answered by ShikaP 7 · 0⤊ 0⤋
1/3 = 5-F / 9
3 = 5-F
F = 2
1= 1/2 + G/3
1/2 = G/3
G = 1.5
第3條唔明你問乜= =
2007-10-08 13:57:44 · answer #5 · answered by ? 3 · 0⤊ 0⤋