Atrisinājums

Skat. 4.att., kur 1) \(8,5+43=51,5 ; \quad 2) \quad 18 \frac{37}{48}:8,5=\frac{901}{48}: \frac{17}{2}=\frac{901 \cdot 2}{48 \cdot 17}=\frac{53}{24}=2 \frac{5}{24}\); 3) \(\frac{9}{10}-\frac{7}{12}=\frac{54}{60}-\frac{35}{60}=\frac{19}{60}\); 4) \(\frac{19}{60}: \frac{19}{130}=\frac{19 \cdot 130}{60 \cdot 19}=2 \frac{10}{60}=2 \frac{1}{6}\); 5) \(18 \frac{37}{48}+2 \frac{1}{6}=20 \frac{37}{48}+\frac{8}{48}=20 \frac{45}{48}=20 \frac{15}{16}\)