\(\left(39\times42-37\times42\right):42=42\times\left(39-37\right)\div42=42\times2\div42=2\)
C1. ( 39.42-37.42):42
= (39-37) . 42 : 42
= 2.1
= 2
C2, (39.42-37.42):42
= (1638 - 1554) : 42
= 84 : 42
= 2
Ai thay hinh dep thi k nha ^_^ @ hihi
(39.42-37.42)/42
=(39-37).42/42
=2.1
=2
vậy (39.42-37.42)/42=2