(3/4-5/1)×(4/3+5/1)等于多少?
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解:(3/4-5/1)×(4/3+5/1)等于( -323/12 ),【即约等于-26.92】
∵已知需求出(3/4-5/1)×(4/3+5/1)等于多少
∴(3/4 - 5/1) × (4/3 + 5/1)
= (3/4 - 5)× (4/3 + 5)
= (3/4 - 20/4)× (4/3 + 15/3)
= (-17/4)× 19/3
= -323/12
= -26.91666667
≈ -26.92
答:(3/4-5/1)×(4/3+5/1)等于-323/12,【即约等于-26.92】
∵已知需求出(3/4-5/1)×(4/3+5/1)等于多少
∴(3/4 - 5/1) × (4/3 + 5/1)
= (3/4 - 5)× (4/3 + 5)
= (3/4 - 20/4)× (4/3 + 15/3)
= (-17/4)× 19/3
= -323/12
= -26.91666667
≈ -26.92
答:(3/4-5/1)×(4/3+5/1)等于-323/12,【即约等于-26.92】
2018-12-13 · 知道合伙人教育行家
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(3/4-5/1)×(4/3+5/1)等于多少?
=(3/4-20/4)×(4/3+15/3)
=(-17/4)×(19/3)
=-17/4×3/19
=-(17×3)/(4×19)
=-51/76
=(3/4-20/4)×(4/3+15/3)
=(-17/4)×(19/3)
=-17/4×3/19
=-(17×3)/(4×19)
=-51/76
追答
=(-17/4)×(19/3)
=-(17×19)/(4×3)
=-323/12
=-26又11/12
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