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[tex] \frac{3}{2} -( \frac{13}{8} - \frac{7}{12} ) \div \frac{5}{6} [/tex]

Răspuns :

3 / 2 - ( 13 / 8 - 7 / 12 )  : 5 / 6 =

= 3 / 2 - ( 39 / 24 - 14 / 24 ) : 5 / 6

= 3  / 2 - 25 / 24 : 5 / 6

= 3 / 2 - 25 / 24 x 6 / 5

= 3 / 2 - 5 / 4

= 6  / 4 - 5 / 4

= 1 / 4