问题
解答题
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答案
(1)5.5-x=2
,3 4
5.5-x+x=2
+x,3 4
2
+x=5.5,3 4
2
+x-23 4
=5.5-23 4
,3 4
x=2.75;
(2)x:0.75=
,5 6
x÷0.75=
,5 6
x÷0.75×0.75=
×0.75,5 6
x=0.625;
(3)2x+30%x=9.2,
2.3x=9.2,
2.3x÷2.3=9.2÷2.3,
x=4.