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7/6×9/4+7/4×9/1用简便计算怎么算

解:根据提取公因式的简便方法, 原式=4/7x6/9+4/7x1/9 =4/7x(6/9+1/9) =4/7x7/9 =4/9

解:根据提取公因式的简便方法, 原式=4/7x6/9+4/7x1/9 =4/7x(6/9+1/9) =4/7x7/9 =4/9

6/7×4/9+4/7×1/9 =(4×6)/(7×9)+(4×1)/(7×9) =(4×6+4×1)/(7×9) =(4×7)/(7×9) =4/9

分数表示的方法为9分之1表示为1/9,“/”为分数线,前面的数字为分子,后面的数字为分母 则原题式子为: 6/7×4/9+4/7×1/9 =4/7×6/9+4/7×1/9 =4/7×(6/9+1/9) =4/7×7/9 =4/9

题目不完整

先用7/9加4/9(11/9),然后与1/6通分

如图

7/9-(5/9+1/6)简便运算 =7/9-5/9+1/6 =2/9+1/6 =4/18+3/18 =7/18

7/9-(1/6+4/9) =7/9-4/9-1/6 =1/3-1/6 =1/6

(9/7+6/5-4/1)×72 =72×7/9+72×5/6-72×1/4 =56+60-18 =98

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