Theo đề ra ta có: 37. 38 - 19. 74= 37. 19. 2- 19. 37. 2= 0
\(37.38-19.74\)
\(=37.19.2-19.37.2\)
\(=37.\left(19.2-19.2\right)\)
\(=37.\left(38-38\right)\)
\(=37.0\)
\(=0\)
37.38-19.74
= 37.19.2 - 19. 37.2
= 37.(19.2-19.2)
= 37.0
= 0
37 . 38 - 19 . 74 = 37 . 38 - 19 . 74 = 37 . 38 - 19 . 2 . 37 = 37 . 38 - 38 . 37 = 0
37 . 38 - 19 . 74
= 37 . 19 . 2 - 19 . 37 . 2
= 37 . (19 . 2 - 19 . 2)
= 37 . (38 - 38)
= 37 . 0
= 0
