0.68×1/7+5/7×0.34怎么算?
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0.68×1/7+5/7×0.34
=0.34×2×1/7+5/7×0.34
=0.34×2/7+5/7×0.34
=0.34×(2/7+5/7)
=0.34×1
=0.34
0.68×1/7+5/7×0.34
=0.34×2×1/7+5/7×0.34
=0.34×2/7+5/7×0.34
=0.34×(2/7+5/7)
=0.34×1
=0.34
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0.68×1/7+5/7×0.34
=(0.34×2)×1/7+5/7×0.34
=0.34×(2×1/7)+5/7×0.34
=0.34×2/7+5/7×0.34
=0.34×(2/7+5/7)
=0.34×1
=0.34
=(0.34×2)×1/7+5/7×0.34
=0.34×(2×1/7)+5/7×0.34
=0.34×2/7+5/7×0.34
=0.34×(2/7+5/7)
=0.34×1
=0.34
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0.68×1/7+5/7×0.34
=1/7(0.68+5×0.34)
=1/7×2.38
=0.34
=1/7(0.68+5×0.34)
=1/7×2.38
=0.34
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