Question

a, 1 - (\(\dfrac{1}{5}\) + \(\dfrac{2}{3}\))

b, \(\dfrac{8}{25}\) x ( 4-\(\dfrac{1}{4}\))

c, 1\(\dfrac{5}{6}\) + 2\(\dfrac{1}{3}\) x \(\dfrac{1}{2}\)

d, \(1\dfrac{3}{4}\) x 2\(\dfrac{2}{5}\): \(1\dfrac{13}{15}\)

 

Answer 1

a) \(=1-\left(\dfrac{3}{15}+\dfrac{10}{15}\right)=1-\dfrac{13}{15}=\dfrac{2}{15}\)
b) \(=\dfrac{8}{25}.\left(\dfrac{16}{4}-\dfrac{1}{4}\right)=\dfrac{8}{25}.\dfrac{15}{16}=\dfrac{3}{10}\)
c) \(=\dfrac{11}{6}+\dfrac{7}{3}.\dfrac{1}{2}=\dfrac{11}{6}+\dfrac{7}{6}=3\)
d) \(=\dfrac{7}{4}.\dfrac{12}{5}:\dfrac{28}{15}=\dfrac{9}{4}\)