题目内容
求未知数X:
X+
X=1
:0.5=
:X
X-5×
=
.
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(1)
x+
x=1,
x=1,
x×
=1×
,
x=
;
(2)
:0.5=
:x,
x=0.5×
,
x×4=0.2×4,
x=0.8;
(3)
x-5×
=
,
x-
=
,
x-
+
=
+
,
x×
=
×
,
x=2
.
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x=
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(2)
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x=0.8;
(3)
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x=2
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