Question

please answer this...

Answer 1

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Answer 2

i)
$\frac{5}{12} + ( \frac{ - 6}{7} ) = ( \frac{ - 6}{7} ) + \frac{5}{12} \\ \\ \frac{5}{12} - \frac{5}{12} = ( \frac{ - 6}{7} ) - ( \frac{ - 6}{7} ) \\ = 0$