
[5又15/8+(1-6/1-0.2)×1.5]÷60/1怎么做?
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解:[5又15/8+(1-6/1-0.2)×1.5]÷60/1等于( -37/2400 )
∵已知需求出[5又15/8+(1-6/1-0.2)×1.5]÷60/1等于多少
∴[5又15/8 + (1 - 6/1 - 0.2) × 1.5] ÷ 60/1
= [(5×8+15)/8 + (1 - 6 - 2/10)×(1×10+5)/10] ÷ 60
= [55/8 + (-5 - 1/5)×15/10]× 1/60
= [55/8 + (-25/5 - 1/5)×3/2]× 1/60
= [55/8 + (-26/5)× 3/2]× 1/60
= [55/8 + (-39/5)]×1/60
= (275/40-312/40)×1/60
= (-37/40)× 1/60
= -37/2400
答:[5又15/8+(1-6/1-0.2)×1.5]÷60/1等于-37/2400
∵已知需求出[5又15/8+(1-6/1-0.2)×1.5]÷60/1等于多少
∴[5又15/8 + (1 - 6/1 - 0.2) × 1.5] ÷ 60/1
= [(5×8+15)/8 + (1 - 6 - 2/10)×(1×10+5)/10] ÷ 60
= [55/8 + (-5 - 1/5)×15/10]× 1/60
= [55/8 + (-25/5 - 1/5)×3/2]× 1/60
= [55/8 + (-26/5)× 3/2]× 1/60
= [55/8 + (-39/5)]×1/60
= (275/40-312/40)×1/60
= (-37/40)× 1/60
= -37/2400
答:[5又15/8+(1-6/1-0.2)×1.5]÷60/1等于-37/2400
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