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
Nhớ tick mình nha !!!!! Đúng 100% đấy!!!!!
-7264 + 1543 + 7264
= -5721 +7264
= 1543
144 -97 -144
= 144 - 144 - 97
=-97
-145 - 18 + 145
=-163 + 145
= -18
sorry cau cuoi to khong lam duoc
tick nha
a,-7264+(1543+7264)=1543
b,(144-97)-144=-97
c,(-145)-(18-145)=-8
d,111+(-11+27)=127
Tick mk vài cái lên 300 nha !!!
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
= 100+27
= 127