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

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

\frac{- 5}{7}

and

\frac{8}{9}

Closure property for addition \(=\)

\frac{i}{i}

is in \(Q\)

Closure property for multiplication \(=\)

\frac{i}{i}

is in \(Q\)

Did you find an error?

2. Five marks exercise problems I