题目内容
解方程或比例:
0.27x+5.1=7.8
x+
x=18
:
=x:27.
0.27x+5.1=7.8
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(1)0.27x+5.1=7.8,
0.27x+5.1-5.1=7.8-5.1,
0.27x÷0.27=2.7÷0.27,
x=10;
(2)
x+
x=18,
x=18,
x×
=18×
,
x=30
;
(3)
:
=x:27,
x=
×27,
x×
=18×
,
x=24.
0.27x+5.1-5.1=7.8-5.1,
0.27x÷0.27=2.7÷0.27,
x=10;
(2)
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x=30
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(3)
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x=24.
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