求未知数x.0.5x-4×0.25=1.25 &...
求未知数x.0.5x-4×0.25=1.2532:x=53:54....
求未知数x.0.5x-4×0.25=1.25 32:x=53:54.
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眼访又1929
2014-09-04
·
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(1)0.5x-4×0.25=1.25,
0.5x-1=1.25,
0.5x-1+1=1.25+1,
0.5x=2.25,
0.5x÷0.5=2.25÷0.5,
x=4.5;
(2)32:x=
:
,
x=32×
,
x=40,
x×
=40×
,
x=24.
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