第一24分之17×5分之1+24分之7÷5-5分之1第二18.6÷0.125第三4.24-3.35+5.73-2.65？
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17/24x1/5+7/24÷5-1/5
=17/24x1/5+7/24x1/5-1/5
=(17/24+7/24-1)x1/5
=0x1/5
=0
18.6÷0.125
=(18.6x8)÷(0.125x8)
=18.6x8
=(20-1.4)x8
=20x8-1.4x8
=160-11.2
=148.8
4.24-3.35+5.73-2.65
=(4.24+5.73)-(3.35+2.65)
=9.97-6
=3.97,1,
=17/24x1/5+7/24x1/5-1/5
=(17/24+7/24-1)x1/5
=0x1/5
=0
18.6÷0.125
=(18.6x8)÷(0.125x8)
=18.6x8
=(20-1.4)x8
=20x8-1.4x8
=160-11.2
=148.8
4.24-3.35+5.73-2.65
=(4.24+5.73)-(3.35+2.65)
=9.97-6
=3.97,1,
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