=27.13-27.16-16.13+16.27
=27.13-16.13=13.(27-16)
=13.11=143
Từ biểu thức, ta có:
(27.13-27.16)-(16.13-16.27)
= 27.13-27.16-16.13+16.27
=27.13-16.13
=13(27-16)
=13.11
=143
27 . ( 13 - 16 ) - 16 . ( 13 - 27 )
= 27.13 -16.27-16.13 -27.16
= ( 16.27 -27.16) + (27.13 - 16.13)
= 13. ( 27-16)
=13.11
=143
\(27.\left(13-16\right)-16.\left(13-27\right)\)
\(=27.13-27.16-16.13+16.27\)
\(=\left(27.16-16.27\right)+\left(27.13-16.13\right)\)
\(=0+27.13-16.13\)
\(=13.\left(27-16\right)\)
\(=13.11\)
\(=143\)
