123-123+456-456+789-789=?

2 câu trả lời

123-123+456-456+789-789

=(123-123)+(456-456)+(789-789)

=0+0+0

=0

 

123-123+456-456+789-789

=(123-123)+(456-456)+(789-789)

=0+0+0

=0