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1+8%8+8÷8X3=

5/9+2/3+1/3 =5/9+(2/3+1/3) =5/9+1 =1又5/9 8/9÷8x3/4 =1/9x3/4 =1/12

(1-3/8)x÷11=(3/8x-4)÷5 3/8x/11=(3/8x-4)/5 3/8x*5=(3/8x-4)*11 15x/8=33x/8-44 15x/8-33x/8=-44 -16x/8=-22 -2x=-22 x=11

解:原方程即: 6/8x+1/8x=7/8 7/8x=7/8 x=7/8÷7/8 x=1 分析:根据等式的性质解一元一次方程。

见图

7/9x9=7 20/9÷4/3= 5/3 20x8/5= 32 4/5x15/8x1/6=1/4 1÷1/8÷8/15=15

1/4×3/8+5/8÷4怎样简便计算 =1/4x3/8+5/8x1/4 =1/4x(3/8+5/8) =1/4x1 =1/4

[4-(5/8-1/2)]÷2/3 =(4-1/8)÷2/3 =31/8÷2/3 =93/16 5/6×3/4+5/6÷4 =5/6x3/4+5/6x1/4 =5/6x(3/4+1/4) =5/6x1 =5/6

1/14。

答案

1/4÷7/6÷5/2÷3/8x7/5=8/25 5/2前面的运算符号写错了,÷写成了x。

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