-5/7 - -3/4 - 1/5 - 2/7 - 1/4

2 câu trả lời

-57-(-34)-15-27-14

=-57+34-15-27-14

=(-57-27)+(34 

= -1 + 1/2 - 1/5

= -1/2 - 1/5

= -7/10

-5/7 - (-3)/4 - 1/5 - 2/7 - 1/4

= -5/7 + 3/4 - 1/5 - 2/7 - 1/4

= (-5/7 - 2/7) + (3/4 - 1/4) - 1/5

= -7/7 + 2/4 - 1/5

= -1 + 1/2 - 1/5

= -10/10 + 5/10 - 2/10

= -7/10