4 (3-m) -6 = 2m ???????????????????????????

2008-11-16 2:48 pm

show the working pleasee

回答 (5)

2008-11-16 2:51 pm

✔ 最佳答案

12 - 4m - 6 = 2m

12 - 6 = 2m + 4m

6m = 6

m = 1

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2008-11-17 8:37 am

12 - 4m - 6 = 2m
6 = 6m
m = 1

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2008-11-16 2:58 pm

4(3 - m) - 6 = 2m
4*3 - 4*m - 6 = 2m
12 - 4m - 6 = 2m
-2m - 4m = -12 + 6
-6m = -6
m = -6/-6
m = 1

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2008-11-16 2:57 pm

12 - 4m - 6 = 2m
12 - 6 = 2m
6 = 6m
m = 1

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2008-11-16 2:55 pm

4 (3-m) -6 = 2m

multiply out brackets so

12-4m-6 = 2m

add 4m both sides

12-6 = 6m

6 = 6m

m = 1

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