please solve 5m-3=2m-9?

2008-11-10 6:07 am

回答 (7)

2008-11-10 6:35 am
✔ 最佳答案
5m - 3 = 2m - 9
5m - 2m = 3 - 9
3m = -6
m = -6/3
m = -2
2008-11-10 2:12 pm
Subtrack 2m from both sides.

3m - 3 = -9

Add -3 to both sides
3m = -6

Divide by 3

m = -2

Plug that back in

you get - 13 = -13

It checks
2008-11-10 6:00 pm
3m = - 6
m = - 2
2008-11-10 3:44 pm
3m = - 6
m = - 2
2008-11-10 2:18 pm
5m-3= 2m-9
5m-2m= -9 +3
3m= -6
m=-2
2008-11-10 2:17 pm
5m - 3 = 2m - 9
(subtract 2m from both sides)
3m - 3 = -9
(add 3 to each side)
3m = -6
(divide each side by three to get m by itself)
m = -2
2008-11-10 2:15 pm
5m - 3 = 2m - 9
4m - 2m = 3 - 9
2m = -6
m = -6/2
m = -3


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