數學解難（方程問題）急

2014-06-01 12:34 am

我想問這條問題的答案

m+2m+7m×4=

回答 (4)

2014-06-01 1:47 am

✔ 最佳答案

由於先乘除,後加減的關係:
m+2m+7m×4
=3m+7x4xm
=3m+28m
=31m

除非.......
4(m+2m+7m)
=4xm+4x2m+4x7m
=4m+8m+28m
=40m

參考: me

👍 0 👎 0

2014-06-01 12:49 am

m + 2m + 7m times 4
= m + 2m + 28m
= 3m + 28m
= 31m

👍 0 👎 0

2014-06-01 12:45 am

m+2m+7m×4=
m+2m+28m=
3m+28m=31m

👍 0 👎 0

2014-06-01 12:39 am

m+2m+7m×4
=m+2m+28m
=31m

OR

(m+2m+7m)×4
=10m×4
=40m

2014-05-31 16:50:21 補充：
看你題目有沒有()括號
如否则是=31m

👍 0 👎 0