Question

6/7 . 8/13 + 6/7 . 9/13 - 3/13 . 6/7

Answer 1

\(\frac{6}{7}.\frac{8}{13}+\frac{6}{7}.\frac{9}{13}-\frac{3}{13}.\frac{6}{7}\)

\(=\frac{6}{7}.\left(\frac{8}{13}+\frac{9}{13}-\frac{3}{13}\right)\)

\(=\frac{6}{7}.\frac{8+9-3}{13}\)                                            .................. Đúng 100% .................

\(=\frac{6}{7}.\frac{14}{13}\)                                        ......................... Tk mik nha 😙😙😙 ...........................

\(=\frac{12}{13}\)

Answer 2

=6/7.(8/13+9/13-3/13)

=6/7.14/13

=84/91

Bài cứ sai sai thế nào ý