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能简算的需要简算.拖式.1/5÷[(2/3+1/5)*1/13]2/3*7+2/3*5(1/6-1/12)*24-4/5(32*1/4+17)÷5/12(25+3/4)÷1/4+1/418/25*9/16+7/25*9/16+9/16

题目详情
能简算的需要简算.拖式.
1/5÷[(2/3+1/5)*1/13]
2/3*7+2/3*5
(1/6-1/12)*24-4/5
(32*1/4+17)÷5/12
(25+3/4)÷1/4+1/4
18/25*9/16+7/25*9/16+9/16
▼优质解答
答案和解析
1/5÷[(2/3+1/5)*1/13]
=1/5÷【13/15 *1/13】
=1/5÷1/15
=1/5*15
=3
2/3*7+2/3*5
=2/3*(7+5)
=2/3*12
=8
(1/6-1/12)*24-4/5
=1/6 *24-1/12 *24-4/5
=4-2-4/5
=6/5
(32*1/4+17)÷5/12
=(8+17)*12/5
=25*12/5
=60
(25+3/4)÷1/4+1/4
=(25*4+3/4)*4+1/4
=100+3+1/4
=413/4
18/25*9/16+7/25*9/16+9/16
=(18/25+7/25+1)*9/16
=2*9/16
=9/8
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