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[144 - 97] - 144
= 144 - 97 - 144
= 0 - 97
= -97
[-145] - [18 - 145]
= 145 - 18 + 145
= 0 - 18
= -18
111 + [-11 + 27]
= 111 - 11 + 27
= 100 + 27
= 127
(144-97)-144=144-97-144= -97
(-145)-(18-145)=(-145)-18+145=-18
111+(-11+27)=111-11+27=127
1)-7264+(1543+7264)=-7264+1543+7264=(-7264+7264)+1543=0+1543=1543
2) (144-97)-144=144-97-144=(144-144)-97=0-97=-97
3) -145-(18-145)=-145-8+145=(-145+145)-8=0-8=-8
4)111+(-11+27)=111-11+27=100+27=127
1) 1543
2) -97
3) -18
4) 127
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-144-[29-(+144)-(+144)]
= -144-(29-144-144)
= -144-29+144+144
= (144-144)+144-29
= 0+115=115
(-144)-[29-(+144)-(+144)]
=(-144)-[29-(-144)+(-144)]
=(-144)-29+144+144
=-173+144x2
=-173+288
=115
hok tốt
1)-7264+(1543+7264)=-7264+1543+7264=1543
2)(144-97)-144=144-97-144=-97
3)(-145)-(18-145)=-145-18+145=-18
4)111+(-11+27)=111-11+27=100+27=127
5)(27+514)-(486-73)=27+514-486-73=541-486-73=55-73=-18
6)(36+79)+(145-79-36)=36+79+145-79-36=145
7)10-[12-(-9-1)]=10-[12+9+1]=10-12-9-1=-12
8)(38-29+43)-(43+38)=38-29+43-43-38=-29
9)271-[(-43)+271-(-17)]=271-[-43+271+17]=271+43-271-17=43-17=26
10)-144-[29-(+144)-(+144)]=-144-[29-144-144]=-144-29+144+144=-29+144=115
-144-[29-144+149]
=-144-29+144-149
=(-144+144)+(-29-149)
= 0 + (-178)
=-178
-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
chia từng câu ra rồi mình giải cho nhé , nhiều câu quá
Bài 1 : bỏ dấu ngoặc rồi tính.
1, -7264+(1543+7264)
\(=-7264+1543+7264\)
\(=-8807+7264\)
\(=-1543\)
2, ( 144-97) - 144
\(=144-97-144\)
\(=47-144\)
\(=-97\)
3, ( -145) - ( 18- 145)
\(=-145-18+145\)
\(=-163+145\)
\(=18\)
4, 111+ ( -11+27)
\(=111+\left(-11\right)+27\)
\(=100+27\)
\(=127\)
5, ( 27+ 514) -( 486-73)
\(=27+514-486+73\)
\(=541-486+73\)
\(=55+73\)
\(=128\)
6, ( 36 + 79) + ( 145-79-36)
\(=36+79+145-79-36\)
\(=115+145-79-36\)
\(=260-79-36\)
\(=145\)
7, 10-[12-(- 9-1)]
\(=10-12+9+1\)
\(=8\)
8, ( 38-29+43) -( 43+38)
\(=38-29+43-43-38\)
\(=-29\)
9, 271-[(-43)+271-(-17)]
\(=271+43-271+17\)
\(=60\)
10, -144-[29-(+144)-(+144)]
\(=-144-29-144-144\)
\(=-461\)
(144-97)-144
=144-97-144
=(144-144)-97
=0-97
=-97
(144-97)-144
=144-97-144
=144-144-97
=0-97
= -97