Question

rút gọn rồi tính : 3/15 -5/35

 

Answer 1

3/15 - 5/35 

= 1/5 - 1/7

= 2/35

Answer 2

3/15-5/35=1/5-5/35=7/35-5/35=2/35

Answer 3

\(\frac{3}{15}-\frac{5}{35}=\frac{1}{5}-\frac{1}{7}=\frac{7}{35}-\frac{5}{35}=\frac{2}{35}\)

Answer 4

Ta có:\(\frac{3}{15}-\frac{5}{35}\)

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

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

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

=\(\frac{2}{35}\)

Answer 5

2/35

kich mình đi

Answer 6

\(\frac{3}{15}-\frac{5}{35}=\frac{105}{525}-\frac{75}{525}=\frac{105-75}{525}=\frac{30}{525}=\frac{2}{35}\)

Answer 7

3/15 = 1/5 = 7/35 -5/35= 2/35