Question

Tính nhanh:

30/4 - 6/8 - 15/20= .........

Mng j mk nha !!!!!!!!!!!!!!

Answer 1

30/4-6/8-15/20

= 30/4- 3/4-3/4

=30/4-(3/4+3/4)

=15/2-6/4

=7,5-1,5

=6

Trả lời :6

Answer 2

30/4-6/8-15/20

= 30/4- 3/4-3/4

=30/4-(3/4+3/4)

=15/2-6/4

=7,5-1,5

=6

Trả lời :6

Answer 3

30/4-6/8-15/20

= 30/4- 3/4-3/4

=30/4-(3/4+3/4)

=15/2-6/4

=7,5-1,5

=6

Trả lời :6

Answer 4

30/4-6/8-15/20

= 30/4- 3/4-3/4

=30/4-(3/4+3/4)

=15/2-6/4

=7,5-1,5

=6

Trả lời :6

Answer 5

30/4-6/8-15/20

= 30/4- 3/4-3/4

=30/4-(3/4+3/4)

=15/2-6/4

=7,5-1,5

=6

Trả lời :6

Answer 6

30/4-6/8-15/20

= 30/4- 3/4-3/4

=30/4-(3/4+3/4)

=15/2-6/4

=7,5-1,5

=6

Trả lời :6