(27+514)-(486-73)
=27+514-486+73
=(27+73)+(514-486)
=100+28=128
Chúc bạn học tốt!
#Huyền#
(27+514)-(486-73)
=27+514-486+73
=(27+73)-(514+486)
=100-1000
=-900
\(\left(27+514\right)-\left(486-73\right)\)
\(=27+514-486+73\)
\(=\left(27+73\right)+\left(514-486\right)\)
\(=10+28=38\)
nhầm
\(\left(27+514\right)-\left(486-73\right)\)
\(=27+514-486+73\)
\(=\left(27+73\right)+\left(514-486\right)\)
\(=100+28=128\)
