问题描述:
0.8÷(5分之4×1.25)÷(0.46-25分之1)+1.2×5分之4
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(12分之5+15分之1)×24×15
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(1+2分之1+3分之1+4分之1)×(3分之1+4分之1+1) -(1+3分之1+4分之1) ×(2分之1+3分之1+4分之1)
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(12分之5+15分之1)×24×15
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(1+2分之1+3分之1+4分之1)×(3分之1+4分之1+1) -(1+3分之1+4分之1) ×(2分之1+3分之1+4分之1)
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问题解答:
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