20,14 x 9 + 20,14
= 20,14 x (9 + 1)
= 20,14 x 10
= 201,4
20,14 x 9 + 20,14
= 20,14 x 9 + 20,14 x 1
= 20,14 x ( 9 + 1 )
= 20,14 x 10
=201,4
20,14x9+20,14
=20,14x(9+1)
=20,14x10
=201,4
thank tất cả các bạn
20,14x9+20,14
=20,14x9+20,14x1
=20,14x(9+1)
=20,14x10
=201,4