Question

Làm giúp mình bài này nha (2 cách luz nhe )

4 - 2+ 6/7

  ​

Answer 1

C1:  4-2+6/7= 2+6/7=14/7+6/7=20/7

C2 : ko bít

Answer 2

C2:=(4-2)+6/7

=2+6/7

=\(2\frac{6}{7}\)

Answer 3

C1 : 4 - 2 +6/7 

= 4 - 20/7 

= 8/7 = \(1\frac{1}{7}\)

C2 : 4 - 2+ 6/7

= 4 - 2\(\frac{6}{7}\)

= 3\(\frac{7}{7}\) - 2\(\frac{6}{7}\)

= (3 - 2) + (7/7 - 6/7)

= 1+ 1/7 = \(1\frac{1}{7}\)