Using commutativity and associativity of addition of rational numbers, express each of the following as a rational number:
[tex] \frac{3}{5} + \frac{ - 7}{6} + \frac{2}{5} + \frac{ - 5}{6} [/tex]
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Using commutativity and associativity of addition of rational numbers, express each of the following as a rational number:
[tex] \frac{3}{5} + \frac{ - 7}{6} + \frac{2}{5} + \frac{ - 5}{6} [/tex]
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Re-arranging and grouping the numbers in pairs in such a way that each group contains a pair of rational numbers with equal denominators, we have,