Thực hiện phép tính: 15/ 24 :3 /4
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a) (-25)-(-17)+24-12
=(-25)+17+24-12
=(-25)+(17+24-12)
=(-25)+29
=29-25=4
b) 4.(15-18)-(3-5)3^2
=4.(-3)-2.9
=-12-18
=-(12+18)=-30
a/
(-25)-(-17)+24-12
= -8 + 12
= 4
b/
4.(15-18)-(3-5).32
= 4.(-3)-(-2).9
= -12 - (-18)
= 6

a, -72 : (24-27)2+12.(-3)
= -72 : (-3)2+ (-3)
= -72 : 9 + (-3)
= -8 + (-3)
= -11
b,|-15| . (-4)-3 . [(-2)3 -6 *(-8)]
= 15.(-4) - 3 . [(-8) - (-48)]
= -60 - 3 . 40
= -60 - 120
= -180

a) (-2).(-6)^2+3.(-2)^3
=(-2).36-24=-96
b) (-6).4.(-7).25
=42.100=4200
c) (-85)-105+62
=-190+62=-128
d) 24.(-15)+(-15).75-15
=(-15).(24+75)-15
=(-15).99-15=-1500


a) [ 316 – ( 25 . 4 + 16 )] : 8 – 24
=( 316 – 116 ) : 8 – 24 = 200 ∶ 8 – 24 = 25 – 24 = 1
b) | -15| + (-27) + 8 + | - 23|
= 15 – 27 + 8 + 23 = 19
c) 5 8 : 5 6 + 2 2 . 3 3 - 2010 0 = 5 2 + 4 . 27 – 1 = 25 + 108 – 1 = 132

a) (-365) + 75 + 365
= (-365 + 365) + 75
= 0 + 75
= 75
b) (-52).76 + (-52).24
= -52.(76 + 24)
= -52.100
= -5200
c) [15 + (2022⁰.37 - 2³] : (-17)
= [15 + (1.37 - 8)] : (-17)
= (15 + 19) : (-17)
= 34 : (-17)
= -2

\(\dfrac{4}{5}\)+\(\dfrac{-5}{4}\)=\(\dfrac{0}{4}\)
\(\dfrac{-1}{3}\)+\(\dfrac{2}{5}-\dfrac{5}{6}\)=\(\dfrac{-10}{30}+\dfrac{12}{30}-\dfrac{25}{30}\)=\(\dfrac{-23}{30}\)
\(\dfrac{2}{3}-\dfrac{5}{7}.\dfrac{14}{25}\)=\(\dfrac{2}{3}-\dfrac{2}{5}\)=\(\dfrac{10}{15}-\dfrac{6}{15}\)=\(\dfrac{4}{15}\)

[(-4) . 6 - (15 - 11)2] - [(-15) : 3]3
= [-24 - 4 . 2] - (-5) . 3
= [-24 - 8] - (-15)
= -32 + 15
= -16

\(\dfrac{2}{5}.\dfrac{1}{3}-\dfrac{2}{15}:\dfrac{1}{5}+\dfrac{3}{5}.\dfrac{1}{3}\)
=\(\dfrac{2}{5}.\dfrac{1}{3}-\dfrac{2}{15}.\dfrac{5}{1}+\dfrac{3}{5}.\dfrac{1}{3}\)
=\(\dfrac{2}{5}.\dfrac{1}{3}-\dfrac{2}{3}+\dfrac{3}{5}.\dfrac{1}{3}\)
=\(\dfrac{2}{5}.\dfrac{1}{3}-\dfrac{1}{3}.2+\dfrac{3}{5}.\dfrac{1}{3}\)
=\(\dfrac{1}{3}.\left(\dfrac{2}{5}+\dfrac{3}{5}-2\right)\)=\(\dfrac{1}{3}.\left(-1\right)=\dfrac{-1}{3}\)
= 5/6
HT
15/24 : 3/4
= 15/24 x 4/3
= 5/6