Question

5.7.77-7.60+49.25-15.42

Answer 1

dấu chấm là dấu nhân hả bn???

\(5.7.77-7.60+49.25-15.42\)

\(=35.77-7.60+49.25-15.42\)

\(=2695-420+1225-630\)

\(=2275+1225-630\)

\(=3500-630\)

\(=2870\)

Answer 2

5.7.77-7.60+49.25-15.42

=2695-420+1225-630

=2275+595

=2870

tk nha bạn

Answer 3

5.7.77-7.60-49.25-15.42

=7.5.77-7.60-7.7.25-7.6.15

=7.(5.77-60-7.25-6.15)

=.....