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Andreea678
a fost răspuns

Calculeaza:

a) 1 supra 6 + 1 supra 3 + 5 supra 12
b) 1 supra 12 + 5 supra 30 + 2 1 supra 4
c) 3 5 supra 6 - 3 supra 5 + 1 1 supra 2 - 7 supra 3
d) 3 1 supra 12 - 3 supra 4 - 7 supra 8

Dau coroana

Răspuns :

Stefan4511
a)
[tex] \frac{1}{6} + \frac{1}{3} + \frac{5}{12} = \frac{2 + 4 + 5}{12} = \frac{11}{12} [/tex]
b)
[tex] \frac{1}{12} + \frac{5}{30} + \frac{21}{4} = \frac{5 + 10 +315 }{60} = \frac{330}{60} [/tex]
c)
[tex] \frac{35}{6} - \frac{3}{5} + \frac{11}{2} - \frac{7}{3} = \frac{175 - 18}{30} + \frac{33 - 14}{6} = \frac{157}{30} + \frac{19}{6} = \frac{157 + 95}{30} = \frac{252}{30} [/tex]
d)
[tex] \frac{31}{12} - \frac{3}{4} - \frac{7}{8} = \frac{62 - 18 - 21}{24} = \frac{23}{24} [/tex]


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