bài 2:
1/ -7264+(1543+7264)
2/(144-97)-144
3/(-145)-(18-145)
4/111+(-11+27)
5/(27+514)-(486-73)
6/(36+79)+145-79-36)
7/10-[12-(-9-1)]
8/(38-29+43)-(43+38)
9/271-[(-43)+271-(-17)]
10/-144-[29-(+144)-(+144)]
bài 2:
1/ -7264+(1543+7264)
2/(144-97)-144
3/(-145)-(18-145)
4/111+(-11+27)
5/(27+514)-(486-73)
6/(36+79)+145-79-36)
7/10-[12-(-9-1)]
8/(38-29+43)-(43+38)
9/271-[(-43)+271-(-17)]
10/-144-[29-(+144)-(+144)]
Đáp án:
Giải thích các bước giải:
Đáp án:
1/-7264+(1543+7264)
=-7264+8807
=1543
2/(144-97)-144
=47-144
=-97
3/(-145)-(18-145)
=-145-(-127)
=-145+127
=-18
4/111+(-11+27)
=111+16
=127
5/(27+514)-(486-73)
=541-413
=128
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+10)
=10-22
=-12
8/(38-29+43)-(43+38)
=52-81
=-29
9/271-[(-43)+271-(-17)]
=271-[228+17]
=271-245
=26
10/-144-[29-(+144)-(+144)]
=-144-[-115-144]
=-144+259
=112