5. Stabiliti valoarea de adevar a urmaroarelor propoziții:
a)
[tex]3 \: \frac{2}{5} = \frac{17}{5} [/tex]
b)
[tex]6 \frac{1}{7} = \frac{42}{7} [/tex]
c)
[tex]7 \frac{2}{9} = \frac{65}{9} [/tex]
d)
[tex]4 \frac{5}{6} = \frac{25}{6} [/tex]
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a) (3*5+2)/5=17/5
17/5=17/5 ADV
b) (6*7+1)/7=42/7
42/7=42/7
6=6 ADV
c)(7*9+2)/9=65/9
65/9=65/9 ADV
d) (4*6+5)/6=25/6
29/6=25/6 FALS
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