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7/12-(3/4-1/2)

7/12-(3/4-1/2) 7/12-(3/4-1/2) =7/12-1/4 =4/12 =1/3

7/12- (9/12+6/12)= 7/12- 15/12 =-8/12

知识不怕重复,经济允许的前提下,充分地横向阅读,让孩子多元地、多场景地接触各种句型和单词,效果是最 ...

(3/4+1/2-7/12)×24 =3/4×24+1/2×24-7/12×24 =18+12-...

通分,分母全化为十二

解: 7/12(3/41/2) =7/123/4+1/2 =7/129/12+6/12 =4...

7/12÷(2/3-1/4) =7/12÷5/12 =7/5

分数的表示方法为12分之7表示为7/12,“/”为分数线,前面的数字为分子,后面的数字为分母 则本...

2/3+(4/7-1/2)x7/12 =2/3+(8/14-7/14)x7/12 =2/3+1/14...

3/4+1/3-5/6=1/4 3/8+1/2-1/4...

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