3×1/9÷1/9×3= 5.4÷5/8+3.6×62.5%-5÷8=
1个回答
3×1/9÷1/9×3
= 3×3
=9
5.4÷8/5+3.6×62.5%-5÷8
=5.4×5/8 +3.6×5/8-5/8
=(5.4+3.6-1)×5/8
=8×5/8
=5
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