题目内容
0.5χ-
=
;
χ+
χ=1
.
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(1)0.5χ-
=
,
0.5χ-
+
=
+
,
0.5x=1,
0.5x÷0.5=1÷0.5,
x=2;
(2)
χ+
χ=1
,
x=1
,
x÷
=1
÷
,
x=2.
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0.5χ-
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0.5x=1,
0.5x÷0.5=1÷0.5,
x=2;
(2)
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x=2.
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