Question

. Giải nhanh dùm 

42 . x = 39 . 42 - 37. 42

Answer 1

42 . x = 39 . 42 - 37. 42

=> 42x=42.(39-37)

=> 42x=42.2

=> x=2

Answer 2

\(42x=39.42-37.42\)

\(42x=42\left(39-37\right)\)

\(42x=42.2\)

\(x=2\) ( chia ca 2 ve cho 42 )

vay \(x=2\)

Answer 3

\(42.x=39.42-37.42\)

\(42.x=42.\left(39-37\right)\)

 \(x=39-37\)

\(x=2\)

Answer 4

42x=39.42-37.42

42.x=42.(39-37)

42x=84

=>x=84:42

=>x=2

Answer 5

42x=39.42-37.42

42.x=42.(39-37)

42x=84

=>x=84:42

=>x=2