13-135+49-13+(-49)
=(13-13)-135[ 49+(-49)]
=0-135+0
=135
hhọc tốt
\(13-135+49-13+\left(-49\right)\)
\(=\left(13-13\right)+\left[\left(-49\right)+49\right]-135\)
\(=0+0-135=-135\)
13 - 135 + 49 - 13 + ( - 49 )
= ( 13 - 13 ) + [ 49 + ( - 49 ] - 135
= 0 + 0 - 135
= - 135
Cảm ơn vì đã xem !!!!!!!!!!!
13 - 135 + 49 - 13 + (-49)
= ( 13 - 13 ) + [ 49 + (-49) ] - 135
= 0 + 0 - 135
= -135
~Hok tốt~
~~~Leo~~~
