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Question

Rút gọn phân số : a) (-14).15\21.(-10)
b) (-7).12/(-16).(-14)
c) (-11).(-5)/15.22
d) (-10).(-18)/(-6).25.7
e) 5.7-7.9/7.2+6.7
f) 11.9-22.3/33.2

Tryechun🥶 · Accepted Answer

`a) ((-14).15)/(21.(-10))``=(-7.3.5.3)/(7.3.(-2).5)``=3/2``b) ((-7).12)/((-16).(-14))``=(-7.3.2.2)/(-2.2.2.(-7).2)``=(-3)/4``c) ((-11).(-5))/(15.22) ``=(-11.(-5))/(3.5.11.2)``=1/6``d) ((-10).(-18))/((-6).25.7)``=(-5.2.-2.3.3)/(-2.3.5.5.7)``=6/35``e) (5.7-7.9)/(7.2+6.7)``=(7.(5-9))/(7.(2+6))``=-4/8``=-1/2``f) (11.9-22.3)/(33.2)``=(33.(3-2))/(33.2)``=1/2`Câu trả lời: `a) ((-14).15)/(21.(-10))``=(-7.3.5.3)/(7.3.(-2).5)``=3/2``b) ((-7).12)/((-16).(-14))``=(-7.3.2.2)/(-2.2.2.(-7).2)``=(-3)/4``c) ((-11).(-5))/(15.22) ``=(-11.(-5))/(3.5.11.2)``=1/6``d) ((-10).(-18))/((-6).25.7)``=(-5.2.-2.3.3)/(-2.3.5.5.7)``=6/35``e) (5.7-7.9)/(7.2+6.7)``=(7.(5-9))/(7.(2+6))``=-4/8``=-1/2``f) (11.9-22.3)/(33.2)``=(33.(3-2))/(33.2)``=1/2`

chào blue sky · Answer

a)(−14).1521.(−10)�)(-14).1521.(-10)=−7.3.5.37.3.(−2).5=-7.3.5.37.3.(-2).5=32=32b)(−7).12(−16).(−14)�)(-7).12(-16).(-14)=−7.3.2.2−2.2.2.(−7).2=-7.3.2.2-2.2.2.(-7).2=−34=-34c)(−11).(−5)15.22�)(-11).(-5)15.22=−11.(−5)3.5.11.2=-11.(-5)3.5.11.2=16=16d)(−10).(−18)(−6).25.7�)(-10).(-18)(-6).25.7=−5.2.−2.3.3−2.3.5.5.7=-5.2.-2.3.3-2.3.5.5.7=635=635e)5.7−7.97.2+6.7�)5.7-7.97.2+6.7=7.(5−9)7.(2+6)=7.(5-9)7.(2+6)=−48=-48=−12=-12f)11.9−22.333.2�)11.9-22.333.2=33.(3−2)33.2=33.(3-2)33.2=12Câu trả lời: a)(−14).1521.(−10)�)(-14).1521.(-10)=−7.3.5.37.3.(−2).5=-7.3.5.37.3.(-2).5=32=32b)(−7).12(−16).(−14)�)(-7).12(-16).(-14)=−7.3.2.2−2.2.2.(−7).2=-7.3.2.2-2.2.2.(-7).2=−34=-34c)(−11).(−5)15.22�)(-11).(-5)15.22=−11.(−5)3.5.11.2=-11.(-5)3.5.11.2=16=16d)(−10).(−18)(−6).25.7�)(-10).(-18)(-6).25.7=−5.2.−2.3.3−2.3.5.5.7=-5.2.-2.3.3-2.3.5.5.7=635=635e)5.7−7.97.2+6.7�)5.7-7.97.2+6.7=7.(5−9)7.(2+6)=7.(5-9)7.(2+6)=−48=-48=−12=-12f)11.9−22.333.2�)11.9-22.333.2=33.(3−2)33.2=33.(3-2)33.2=12

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