2-
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1+
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x=
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(2)8x-7×2.3=32.9,
8x-16.1=32.9,
8x-16.1+16.1=32.9+16.1,
8x÷8=49÷8,
x=6
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(3)x÷25×4=80,
x÷25×4÷4=80÷4,
x÷25=20,
x÷25×25=20×25,
x=500.
编辑:chaxungu时间:2026-04-27 13:38:00分类:小学数学题库
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