下面各题怎样简便怎样算(求未知数X).4.02-1.36-2.64(1-67)÷73×37514+(914-49)X:34=25:103(34÷3-0.2)×125.-数学
题文
下面各题怎样简便怎样算(求未知数X).
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答案
(1)4.02-1.36-2.64, =4.02-(1.36+2.64), =4.02-4, =0.02; (2)(1-
=
=
=
(3)
=
=1-
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题文
下面各题怎样简便怎样算(求未知数X).
|
答案
(1)4.02-1.36-2.64, =4.02-(1.36+2.64), =4.02-4, =0.02; (2)(1-
=
=
=
(3)
=
=1-
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