Question

tính -7129 + 1478 +7129 + (-1479)=

bang bao nhieu la giup voi

 

Answer 1

-7129 + 1478 + 7129 + (-1479) =

<-7129 + 7129> + <1478 + (-1479)> =

0 + -1 = 

-1.

Dùng quy tắc giao hoán là tính nhanh thui bn à!!!!!!

Answer 2

-7129 + 1478 +7129 + (-1479)

= (7129 - 7129) - (1479 - 1487)

= 0 - 1

= -1

Answer 3

 -7129 + 1478 +7129 + (-1479)

= - 7129 + 7129 + 1478 + ( - 1479 )

= 0 + 1

= 1

Answer 4

-7129+1478+7129+[-1479 ] 

=-5651+7129-1479

=1478-1479

=-1 

k cho mk nha 

Answer 5

\(-7129+1478+7129+\left(-1479\right)\)

\(=\)\(\left(-7129+7129\right)+\left(1478-1479\right)\)

\(=\)\(0+\left(-1\right)\)

\(=\)\(-1\)

Answer 6

Ta có \(-7129+1478+7129+\left(-1479\right)\)

\(=\left(-7129+7129\right)+\left[1478+\left(-1479\right)\right]\)

\(=0-1\)

\(=-1\)

Answer 7

-7129+1478+7129+(-1479)

=[(-7129)+7129]+[1478+(-1479)]

=0+(-1)

=-1