题目内容
解方程,我没问题!
X+
X=
:X=
:
2x-1.65+2.35=7.
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(1)
X+
X=
,
(
+
)X=
,
X=
,
X×
=
×
,
X=
;
(2)
:X=
:
,
X=
×
,
X=
,
X×
=
×
,
X=
;
(3)2x-1.65+2.35=7,
2x+(2.35-1.65)=7,
2x+0.7=7,
2x+0.7-0.7=7-0.7,
2x=6.3,
2x÷2=6.3÷2,
x=3.15.
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(
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X=
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(2)
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X=
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(3)2x-1.65+2.35=7,
2x+(2.35-1.65)=7,
2x+0.7=7,
2x+0.7-0.7=7-0.7,
2x=6.3,
2x÷2=6.3÷2,
x=3.15.
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