问题
解答题
用第等式计算: (1)[(20+9.744÷2.4)×0.15-1.63]÷0.25 (2)108÷[(0.68+3.72÷1
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答案
(1)[(20+9.744÷2.4)×0.15-1.63]÷0.25,
=[(20+4.06)×0.15-1.63]÷0.25,
=[24.06×0.15-1.63]÷0.25,
=[3.609-1.63]÷0.25,
=1.979÷0.25,
=7.916;
(2)108÷[(0.68+3.72÷1
-68%)×3 5
],10 13
=108÷[(0.68+2.325-68%)×
],10 13
=108÷[(0.68-68%+2.325)×
],10 13
=108÷[2
×13 40
],10 13
=108÷[(2+
)×13 40
],10 13
=108÷[2×
+10 13
×13 40
],10 13
=108÷(
+20 13
),1 4
=108÷
,93 52
=
.1872 31