Question

27.77+27.27-27=

Answer 1

27. 77 + 27.27-27 = 27.( 77 + ( 27 - 27 ))

                             = 27.77

                             =2079

Answer 2

\(27.77+27.27-27\)

\(=27.77+27.27-27.1\)

\(=27.\left(77+27-1\right)\)

\(=27.103\)

=2781

Answer 3

27.77+27.27-27=27(77+27-27)=27.77=2079

Answer 4

27.77+27.27-27=27.77+27.27-27.1=27(77+27-1)=27.103=2781

câu trên là nhầm nhé