please solve 5m-3=2m-9?
回答 (7)
✔ 最佳答案
5m - 3 = 2m - 9
5m - 2m = 3 - 9
3m = -6
m = -6/3
m = -2
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
5m-3= 2m-9
5m-2m= -9 +3
3m= -6
m=-2
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
5m - 3 = 2m - 9
4m - 2m = 3 - 9
2m = -6
m = -6/2
m = -3
收錄日期: 2021-05-01 11:28:51
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