\(=-\dfrac{7}{4}-\left(-\dfrac{1}{9}-\dfrac{37}{18}\right)=-\dfrac{7}{4}-\left(\dfrac{-2-37}{18}\right)=-\dfrac{7}{4}-\left(-\dfrac{13}{6}\right)=-\dfrac{7}{4}+\dfrac{13}{6}=\dfrac{-7.6+13.4}{24}=\dfrac{10}{24}=\dfrac{5}{12}\)
t) \(=1,75-\left(\dfrac{-1}{9}-\dfrac{37}{18}\right)\)
\(=1,75-\dfrac{-35}{18}=\dfrac{7}{4}-\dfrac{-35}{18}=\dfrac{133}{36}\)
\(t,-1,75-\left(\dfrac{-1}{9}-2\dfrac{1}{18}\right)=\dfrac{-7}{4}+\dfrac{1}{9}+\dfrac{37}{18}=\dfrac{-63}{36}+\dfrac{4}{36}+\dfrac{74}{36}=\dfrac{15}{36}\)
