Question

a) 47.69-31.(-47) 
Tính nhanh nha <3
 

Answer 1

\(=47\cdot69-31\cdot\left(-47\right)\\ =47\cdot69+31\cdot47\)

\(=47\cdot\left(69+31\right)\)

\(=47\cdot100\\ =4700\)

Answer 2

47 . 69 - 31 . ( - 47 )

= 47 . 69 + 31 . 47

= 47 . ( 69 + 31 )

= 47 . 100

= 4700

Answer 3

=4700 nha

HT

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Answer 4

a, 47 . 69 - 31 . (-47)

= 47 . 69 + 31 . 47

= 47 . (69 + 31)

= 4700

Answer 5

=4700 nha