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271-[(-43)+271-(-17)]
= 271 + 43 - 271 -17
= ( 271 - 271 ) + ( 43 - 17 )
= 0 + 26
= 26
-144-[29-(+144)-(+144)]
= - 144 - 29 + 144 + 144
= ( 144 - 144 ) + ( 144 - 29 )
= 0 + 115
= 115
a) Ta có: \(271-\left[\left(-43\right)+271-\left(-17\right)\right]\)
\(=271-\left(-43+271+17\right)\)
\(=271+43-271-17\)\(=43-17=26\)
b) Ta có: \(-144-\left[29-\left(+144\right)-\left(+144\right)\right]\)
\(=-144-\left[29-144-144\right]\)
\(=-144-29+144+144\)
\(=144-29=115\)
( 36 + 79 ) + ( 145 - 79 - 36 )
= 115 + ( 66 - 36 )
= 115 + 30
= 145
10 - [ 12 - ( - 9 - 1 ) ]
= 10 - [ 12 - ( - 10 ) ]
= 10 - 22
= - 12
( 38 - 29 + 43 ) - ( 43 + 38 )
= ( 9 + 43 ) - 81
= 52 - 81
= - 29
271 - [ ( 43 ) + 271 - ( - 17 ) ]
= 271 - [ 314 - ( - 17 ) ]
= 271 - 331
= - 60
- 144 - [ 29 - ( + 144 ) - ( + 144 ) ]
= - 144 - [ ( - 115 ) - ( + 144 ) ]
= - 144 - ( - 259 )
= 115
(36+79)+(145-79-36)
=115+30
=145
10-[12-(-9-1)]
=10-22
=-12
(38-29+43)-(43+38)
=52-81
=(-29)
271-[(43)+271-(17)]
=271-297
=(-26)
-144-[29-(+144)-(+144)
=-144-(-259)
=115
\(\left(-12\right)+\left(-13\right)+36+\left(-11\right)=\left(-12-13-11\right)+36\)
\(=\left(-36\right)+36\)
\(=0\)
\(a.10-\left[12-\left(-9-1\right)\right]\)
\(=10-12+9+1\)
\(=8\)
\(a,10-\left[12-\left(-9-1\right)\right]\)
\(=10-\left[12+9+1\right]\)
\(=10-22=-12\)
\(b,271-\left[\left(-43\right)+27-\left(-17\right)\right]\)
\(=271-\left[-43+27+17\right]\)
\(=271-\left[1\right]\)
\(=270\)
\(c,-144-\left[29-144-144\right]\)
\(=-144-29+144+144\)
\(=144-29=115\)
-7264 + ( 1543 + 7264 )
=-7264 + 1543 + 7264
=1543
(144 - 97 ) -144
=144 - 97 - 144
=-97
( -145 ) - ( 18 -145 )
= -145 - 18 - 145
=-308
111 + ( -11 + 27 )
=111 - 11 + 27
=127
( 27+ 514 ) - (486-73)
=27 + 514 - 486 - 73
=-18
( 36 + 79 ) + ( 145 - 79 - 36 )
=36 + 79 + 145 - 79 - 36
=145
( 38 -29+ 43 ) - ( 43 + 38 )
=38 - 29 + 43 - 43 + 38
=47
271 - [ ( -43 ) + 271 - ( -17)]
= 271 + 43 + 271 + 17
=602
-144 - [ 29 - ( + 144 ) - ( + 144 ) ]
=-144 - 29 - 144 - 144
=-461
hok tốt !
a) -7264+(1543 +7264) b) (144-97)-144 c)(-145)-(18-145)
=(-7264)+1543+7264 =144-97-144 =(-145)-18+145
= [(-7264)+7264]+1543 =(144-144)-97 =[(-145)+145}-18
=0+1543 =0-97 = 0-18
=1543 = -97 = -18
27 + 514 - 486 + 73 = 128
10 - 12 - 9 - 1 = - 12
Tk mik mik làm nốt cho
Mik mới bị trừ 50 chục điểm bùn qúa T_T
f,(36+79)+(145-79-36)
=36+79+145-79-36
=(36-36)+(79-79)+145
=0+0+145
=145
g,10-[12-(-9-1)]
=10-(12+9+1)
=10-(12+10)
=10-12-10
=(10-10)-12
=0-12
=-12
h,(38-29+43)-(43+38)
=38-29+43-43-38
=(38-38)-29+(43-43)
=0-29+0
=-29
i,271-[(-43)+271-(-17)]
=271-(-43+271+17)
=271+43-271-17
=(271-271)+(43-17)
=0+26
=26
k,-144-[29-(+144)-(+144)]
=-144-(29-144-144)
=-144-29+144+144
=(-144+144)-29+144
=0-29+144
=-29+144
=115
a) (-7264) + (1543 + 7264)
= -7264 + 1543 + 7264
= [ (-7264) + 7264 ] + 1543
= 0 + 1543
= 1543
dùng mt ik
=271-[(-43)+0-(-17)]
=271-[(-43)-(-17)]
=271-(-26)
=297
Câu tiếp theo
=(-144) - [29 - 0]
=(-144) - 29
=-(-173)
Chúc bạn học tốt