Question

Answer 1

a: \(-\dfrac{5}{18}+0,25=-\dfrac{10}{36}+\dfrac{9}{36}=-\dfrac{1}{36}\)

b: \(\dfrac{11}{24}-0,75=\dfrac{11}{24}-\dfrac{18}{24}=-\dfrac{7}{24}\)

c: \(-\dfrac{19}{64}+3,75=-\dfrac{19}{64}+\dfrac{240}{64}=\dfrac{221}{64}\)

d: \(\dfrac{67}{72}-12,5=\dfrac{67}{72}-\dfrac{900}{72}=\dfrac{-843}{72}\)

e: \(\dfrac{31}{56}+\dfrac{-39}{84}=\dfrac{31}{56}+\dfrac{-26}{56}=\dfrac{5}{56}\)

f: \(\dfrac{43}{48}-\dfrac{31}{36}=\dfrac{43\cdot3-31\cdot4}{144}=\dfrac{129-124}{144}=\dfrac{5}{144}\)

g: \(-\dfrac{97}{96}+\dfrac{-53}{64}\)

\(=-\dfrac{194}{192}+\dfrac{-159}{192}\)

\(=\dfrac{-353}{192}\)

h: \(\dfrac{23}{32}-\dfrac{-47}{48}\)

\(=\dfrac{69}{96}+\dfrac{94}{96}\)

\(=\dfrac{163}{96}\)