Five marks exercise problems V — task. Mathematics State Board, Class 8.

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Verify the identity property for addition and multiplication for the rational numbers

$\frac{15}{19}$ and

$\frac{- 18}{25}$ .

Identity property for addition:

$\frac{15}{19}$

$+$

$=$

$+$

$\frac{15}{19}$

$=$

$\frac{i}{i}$

Identity property for multiplication:

$\frac{15}{19}$

$\times$

$=$

$\times$

$\frac{15}{19}$

$=$

$\frac{i}{i}$

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