Question

A) ( 5 sobre 6) - ( 1 sobre 4 ) B) (2 sobre 3) + ( 1 sobre 2 ) C) ( 5 sobre 8 ) + ( 3 sobre 10 ) D) ( 3 sobre 8) - ( 1 sobre 9) E) ( 7 sobre 8) - ( 8 sobre 9) me ajudem por favor é pra amanhã

Answer 1

a) $\dfrac{5}{6}-\dfrac{1}{4}=\dfrac{10-3}{12}=\boxed{\dfrac{7}{12}}$

b) $\dfrac{2}{3}+\dfrac{1}{2}=\dfrac{4+3}{6}=\boxed{\dfrac{7}{6}}$

c) $\dfrac{5}{8}+\dfrac{3}{10}=\dfrac{25+12}{40}=\boxed{\dfrac{37}{40}}$

d) $\dfrac{3}{8}-\dfrac{1}{9}=\dfrac{27-8}{72}=\boxed{\dfrac{19}{72}}$

e) $\dfrac{7}{8}-\dfrac{8}{9}=\dfrac{63-64}{72}=\boxed{-\dfrac{1}{72}}$