15÷(1.2十0.5)X5等于多少简便?
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解:15÷(1.2十0.5)X5等于( 750/17 ) ,【即约等于44.12】
∵已知需求出15÷(1.2十0.5)X5等于多少
∴15 ÷ (1.2 十 0.5) X 5
= 15 ÷ [(1×10+2)/10 + 5/10] × 5
= 15 ÷ (12/10 + 1/2)× 5
= 15 ÷ (6/5 + 1/2)× 5
= 15 ÷ (12/10 + 5/10)× 5
= 15 ÷ 17/10 × 5
= 15 × 10/17 × 5
= 150/17 × 5
= 750/17
= 44.11764706
≈ 44.12
答:15÷(1.2十0.5)X5等于750/17,【即约等于44.12】
∵已知需求出15÷(1.2十0.5)X5等于多少
∴15 ÷ (1.2 十 0.5) X 5
= 15 ÷ [(1×10+2)/10 + 5/10] × 5
= 15 ÷ (12/10 + 1/2)× 5
= 15 ÷ (6/5 + 1/2)× 5
= 15 ÷ (12/10 + 5/10)× 5
= 15 ÷ 17/10 × 5
= 15 × 10/17 × 5
= 150/17 × 5
= 750/17
= 44.11764706
≈ 44.12
答:15÷(1.2十0.5)X5等于750/17,【即约等于44.12】
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