Đáp án:
Giải thích các bước giải:
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)-18+145
=(-145+145)-18
=0-18
-18
4, 111+(-11+27)
=111+11+27
=(111+11)+27
=122+27
=149
5, (27+514)-(486-73)
=27+514-486+73
=(27+73)-(514+486)
=100-1000
=-900
6, (36+79)+(145-79-36)
=36+79+145-79-36
=(36-36)+(79-79)+145
=0+0+145
=145
7, 10-[12-(-9-1)]
= 10-12+(-9-1)
=10-12+(-10)
=[10-(-10)]-12
=20-12
=8
8, (38-29+43)-(43+38)
=38-29+43-43-38
=(38-38)+(43-43)-29
=0+0-29
=-29
9, 271-[(-43)+271-(-17)]
=271-(-43)-271+(-17)
=(271-271)+[(-43)+(-17)]
=0+(-60)
=-60
10, -144-[29-(+144)-(+144)]
=-144-29+(+144)+(+144)
=[-144+(+144)]+(+144)-29
=0+144-29
=144-29
=115