Question

1 - [ 1/5 +1/7 ] = ......

Answer 1

giải hộ e ạ

Answer 2

=1/1-1/5-1/7

=35/35-7/35-5/35

=23/35

Answer 3

=1- (7/35+5/35)

=1 - 12/35

= 23/35

Answer 4

\(1-\left(\dfrac{1}{5}+\dfrac{1}{7}\right)\)

\(=1-\left(\dfrac{7}{35}+\dfrac{5}{35}\right)\)

\(=1-\dfrac{12}{35}\)

\(=\dfrac{35}{35}-\dfrac{12}{35}\)

\(=\dfrac{23}{35}\)

Answer 5

Answer 6

\(=1-\left(\dfrac{7}{35}+\dfrac{5}{35}\right)\)

\(=1-\dfrac{12}{35}\)

\(=\dfrac{23}{35}\)

Answer 7

\(=\dfrac{1}{1}-\dfrac{1}{5}-\dfrac{1}{7}\)

\(=\dfrac{35}{35}-\dfrac{7}{35}-\dfrac{5}{35}\)

\(=\dfrac{23}{35}\)

Answer 8

=1- (7/35+5/35)

=1 - 12/35

= 23/35

Answer 9

11 /15 + 7/5 =......+......=

Answer 10

=1- (7/35+5/35)

=1 - 12/35

= 23/35

Answer 11

=1/1-1/5-1/7

=35/35-7/35-5/35

=23/35

Answer 12

23/35

Answer 13

=1/1-1/5-1/7

=35/35-7/35-5/35

=23/35