數-方程(10dim)

2009-08-06 7:42 pm
1. 6/y(6分之y) = 12


驗算:

2. 8m - 5 = 27

驗算:

3. 6 (p-11)= 48

驗算:

4. q×35% = 14

驗算:

5. r+18/12(r+19分之12) = 2/6/1(2又6分之1)

驗算:

6. 2s + 0.6 = 24

驗算:
1

回答 (1)

2009-08-15 2:31 am
✔ 最佳答案
1. 6/y=12
6y/y = 12y
6=12y
1/2=y
驗算:6/(1/2)=6*2/1=12

2. 8m - 5 = 27
8m=27+5=32
m=32/8=4
驗算:8*4-5=32-5=27

3. 6 (p-11)= 48
p-11=48/6=8
p=8+11=19
驗算:6(19-11)=6*8=48

4. q35% = 14
q=14/0.35=40
驗算:40x35%=1400/100=14

5. r+18/12(r+19分之12) = 2/6/1(2又6分之1)
內容不清,未能答。

6. 2s + 0.6 = 24
2s=24-0.6=23.4
s=11.7
驗算:2(11.7)+0.6=23.4+0.6=24














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