Question

Tinh

A).11/14-5/7

5/8:8/12

2/5+1/6x2/7

Lam day du tick.le len mn oii.tick 3

Answer 1

\(a;\frac{11}{14}-\frac{5}{7}=\frac{11}{14}-\frac{10}{14}=\frac{1}{14}\)

\(b;\frac{5}{8}:\frac{8}{12}=\frac{5}{8}:\frac{2}{3}=\frac{5}{8}\times\frac{3}{2}=\frac{15}{16}\)

\(c;\frac{2}{5}+\frac{1}{6}\times\frac{2}{7}=\frac{2}{5}+\frac{2}{42}=\frac{2}{5}+\frac{1}{21}=\frac{42}{105}+\frac{5}{105}=\frac{47}{105}\)

tích mình nhen

Answer 2

phần mình nhé mai trả lời

Answer 3

11/14-5/7=11/14-10/14=1/14

5/8 : 8/12=5/8 x 12/8=60/64=15/16

2/5+1/6x2/7=2/5+1/21=42/105+5/105=47/105

Answer 4

a) \(\frac{11}{14}-\frac{5}{7}\)

= \(\frac{11}{14}-\frac{10}{14}\)

= \(\frac{11-10}{14}\)

= \(\frac{1}{14}\)

b) \(\frac{5}{8}:\frac{8}{12}\)

= \(\frac{5}{8}.\frac{12}{8}\)

= \(\frac{15}{16}\)

c) \(\frac{2}{5}+\frac{1}{6}.\frac{2}{7}\)

= \(\frac{2}{5}+\frac{1}{21}\)

= \(\frac{42+5}{105}\)

= \(\frac{47}{105}\)