2. 12+m/7=24
更新1:
e個係小學的數.. so係冇副數
數學題（方程式）要列式，第２題唔洗
回答 (3)
2008-01-31 7:09 am
1. 87-x/7 = 68
87*7 - x/7*7 = 68*7
609 - x = 476
x = 609 - 476
x = 133
2. 12 + m/7 = 24
12*7 + m/7*7 = 24*7
84 + m = 168
m = 168 - 84
m = 84
87*7 - x/7*7 = 68*7
609 - x = 476
x = 609 - 476
x = 133
2. 12 + m/7 = 24
12*7 + m/7*7 = 24*7
84 + m = 168
m = 168 - 84
m = 84
參考: 我，其實通分母咪可以解決囉
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