Question

\(\dfrac{3}{5}+\dfrac{a}{b}=5\)    \(\dfrac{a}{b}-\dfrac{4}{7}=\dfrac{5}{6}\)     \(\dfrac{2}{3}\) x \(\dfrac{a}{b}=\dfrac{3}{5}\)

\(\dfrac{a}{b}:\dfrac{2}{7}=3+\dfrac{2}{3}\)   \(\dfrac{7}{5}-\dfrac{a}{b}=\dfrac{2}{5}:2\)

\(\dfrac{3}{5}:\dfrac{a}{b}=\dfrac{2}{7}\) ÉT O ÉT

Answer 1

a)\(\dfrac{a}{b}=5-\dfrac{3}{5}=\dfrac{25}{5}-\dfrac{3}{5}=\dfrac{22}{5}\)

b)\(\dfrac{a}{b}=\dfrac{5}{6}+\dfrac{4}{7}=\dfrac{35}{42}+\dfrac{24}{42}=\dfrac{59}{42}\)

c)\(\dfrac{a}{b}=\dfrac{3}{5}:\dfrac{2}{3}=\dfrac{3}{5}\times\dfrac{3}{2}=\dfrac{9}{10}\)

Answer 2

d)\(\dfrac{a}{b}=3\times\dfrac{2}{7}=\dfrac{6}{7}\)

e)\(\dfrac{a}{b}=\dfrac{7}{5}-\left(\dfrac{2}{5}\times\dfrac{1}{2}\right)=\dfrac{7}{5}-\dfrac{1}{5}=\dfrac{6}{5}\)

Answer 3

a 22/5

b 59/42

c 9/10

d 6/7

e 6/5