Question

calcule

a )
$\frac{1}{3} + \frac{2}{3}$
b)
$\frac{2}{7} + \frac{5}{7}$
c)
$\frac{8}{10} + \frac{1}{10}$
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Answer 1

a) 3/3
b) 7/7
c) 9/10