Question

Answer 1

a.\(\dfrac{7}{18}+\dfrac{7}{9}\)=\(\dfrac{7}{6}\)

Answer 2

\(a,\\ =\dfrac{7}{18}-\dfrac{14}{18}=-\dfrac{7}{18}\\ b,\\ =\dfrac{27}{28}-\dfrac{16}{28}=\dfrac{11}{28}\\ c,\\ =\dfrac{24}{81}=\dfrac{8}{27}\\ d,\\ =\dfrac{15}{7}\times\dfrac{1}{5}=\dfrac{15}{35}=\dfrac{3}{7}\)

Answer 3

\(a.=\dfrac{7}{18}+\dfrac{14}{18}=\dfrac{21}{18}=\dfrac{7}{6}\\ b.=\dfrac{27}{28}-\dfrac{14}{28}=\dfrac{13}{28}\\ c.=\dfrac{4\times2}{3\times9}=\dfrac{8}{27}\\ d.=\dfrac{15}{7\times5}=\dfrac{3}{7}\)

Answer 4

b.\(\dfrac{27}{28}-\dfrac{4}{7}\)=\(\dfrac{11}{28}\)  c=\(\dfrac{4}{9}x\)\(\dfrac{6}{9}\)=\(\dfrac{8}{27}\)

Answer 5

d\(\dfrac{15}{7}:5=\dfrac{3}{7}\)