2X+30%X=9.2
X:3.5=2.2:15.4
12:
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2.3X=9.2,
2.3X÷2.3=9.2÷2.3,
X=4;
(2)X:3.5=2.2:15.4,
15.4X=3.5×2.2,
15.4X÷15.4=3.5×2.2÷15.4,
X=0.5;
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x=10.
编辑:chaxungu时间:2026-04-27 13:38:15分类:小学数学题库
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