maths equation

2008-04-06 4:22 am
19. 8.2 - 2c = 2.8
更新1:

20.xxx 21.xxx 22. 4(y-1.6) = 5.6

回答 (4)

2008-04-06 4:26 am
✔ 最佳答案
19. 8.2 -2c=2.8
8.2-2.8=2c
5.4=2c
c=2.7
22. 4(y-1.6)=5.6
y-1.6=1.4
y=3

Best regards,

Samson So
www.tripro.com.hk
2008-04-06 6:14 am
19. 8.2 - 2c = 2.8
8.2 = 2.8 + 2c
8.2 - 2.8 = 2c
2c = 5.4
c = 2.7

20. What do you want to say?
21. What do you want to say?

22. 4( y - 1.6 ) = 5.6
4y - 6.4 = 5.6
4y = 5.6 + 6.4
4y = 12
y = 3
參考: myself
2008-04-06 5:01 am
19. 8.2 -2c=2.8

8.2-2.8=2c

5.4=2c

c=2.7

22. 4(y-1.6)=5.6

y-1.6=1.4

y=3
2008-04-06 4:29 am
19. 8.2-2c=2.8
-2c=-5.4
c=-5.4/-2
c=2.7


22. 4(y-1.6)=5.6
y-1.6=1.4
y=3
參考: 自己


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