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7/2×5/8%3/2÷8/5的简便计算

7/2×5/8-3/2÷8/5的简便计算 7/2×5/8-3/2÷8/5 =7/2×5/8-3/2×5/8 =(7/2-3/2)×5/8 =2×5/8 =5/4=1.25

7/2x5/8-3/2÷8/5 =7/2x5/8-3/2×5/8 =5/8×(7/2-3/2) =5/8×2 =5/4

7/2×5/8-3/2÷8/5 =(7/2-3/2)×5/8 =2×5/8 =1又4分之1 你好,本题已解答,如果满意 请点右下角“采纳答案”。

没有简便算法,直接计算 原式=8/7-2/5×3/2-5/2 =8/7-3/5-5/2 =19/35-5/2 =-137/70

X+3/5=8 解:X=8-3/5 X=7又2/5 3/8+5/7÷2/7 =3/8+5/2 =2又7/8 3/8+5/7x1/5 =3/8+1/7 =29/56

5/7-括号3/8-2/7括号用简便方法计算 =5/7-3/8+2/7 =5/7+2/7-3/8 =1-3/8 =5/8

第一个应该是3/8x8/3=ax(1/a)=1

7/8×2/7÷3/5 =1/4*5/3 =5/12

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