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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: \(-144-\left[29-\left(+144\right)-\left(+144\right)\right]\)
\(=-144-\left[29-144-144\right]\)
\(=-144-29+144+144\)
\(=144-29=115\)
![](https://rs.olm.vn/images/avt/0.png?1311)
271-[(-43)+271-(-17)]
=271+43-271-17
= (271+-271)+(43-17)
=0+26
=26
271-[(-43)+271-(-17)]
=(271-271)+43-17
=0+26
=26 ( cách làm có thể sai nhưng kết quả đúng 100%)
![](https://rs.olm.vn/images/avt/0.png?1311)
271 - [ ( -43 ) + 271 - ( -17 )
= 271 - [ -43 + 271 + 17 ]
= 271 + 43 - 271 - 17
= ( 271 - 271 ) + ( 43 - 17 )
= 0 + 26
= 26
= 271 + 43 - 271 - 17
= ( 271 - 271 ) + ( 43 -17 )
= 0 + 26
= 26
![](https://rs.olm.vn/images/avt/0.png?1311)
a ) 159 − 524 − 59 − 424 ; = 159 − 524 − 59 + 424 = 159 − 59 − 524 − 424 = 100 − 100 = 0 b ) 36 + 79 + 145 − 79 − 36 ; = 36 + 79 + 145 − 79 − 36 = 36 − 36 + 79 − 79 + 145 = 145 c ) 334 − 117 + 234 + 42 + 117 ; = 334 − 117 − 234 + 42 + 117 = 334 − 234 − 117 − 117 + 42 = 100 + 42 = 142 d ) 271 − − 43 + 271 − − 17 . = 271 − − 43 + 271 + 17 = 271 + 43 − 271 − 17 = 271 − 271 + 43 − 17 = 26
![](https://rs.olm.vn/images/avt/0.png?1311)
271-[(-43)+271.(-17)]
=271-[(-43)+(-4607)]
=271-(-43)+(-4607)
=271+43+(-4607)
=314+(-4607)
=(-4293)
Chúc bn học tốt
![](https://rs.olm.vn/images/avt/0.png?1311)
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
![](https://rs.olm.vn/images/avt/0.png?1311)
a)271+43-271-17=26
b)38-29+43-43-38=-29
c)-20-25+11+8+25-8+20=11
học tốt
=271+43-271-17
=(271-271)+(43-17)
=0+26
=26
271-[(-43)+271-(-17)]
=271+43-271+17
=(271-271)+(43+17)
= 0 + 60
= 60
Tick nha!!! ^~^