Question

Answer 1

10.

a)

\(15-\left(3\dfrac{1}{4}+4\dfrac{1}{2}\right)=15-\left(\dfrac{13}{4}+\dfrac{9}{2}\right)=15-\left(\dfrac{13}{4}+\dfrac{18}{4}\right)=15-\dfrac{31}{4}=\dfrac{29}{4}\)

b)

\(4\dfrac{1}{8}:\left(4-\dfrac{1}{4}\right)=\dfrac{33}{8}:\dfrac{3}{4}=\dfrac{11}{2}\)

c)

\(1\dfrac{4}{35}+3\dfrac{4}{7}\cdot3\dfrac{1}{5}=\dfrac{39}{35}+\dfrac{25}{7}\cdot\dfrac{16}{5}=\dfrac{39}{35}+\dfrac{80}{7}=\dfrac{439}{35}\)