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If a property holds for rational numbers, will it also hold for integers? For whole Numbers? Which will? Which will not?


(i) Any property which is true for rational numbers, is also true for integers except for any integers ‘a’ and ‘b’ (a ÷ b) is not necessarily an integer.

(ii) All properties which are true for rational numbers, are also true for whole numbers also except:

(a) For ‘a’ and ‘b’ being whole numbers, (a – b) may not be a whole number.

(b) For ‘a’ and ‘b’ being whole numbers (b ? 0), a ÷ b may not be whole number.

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If a property holds for rational numbers, will it also hold for integers? For whole Numbers? Which will? Which will not?


(i) Any property which is true for rational numbers, is also true for integers except for any integers ‘a’ and ‘b’ (a ÷ b) is not necessarily an integer.

(ii) All properties which are true for rational numbers, are also true for whole numbers also except:

(a) For ‘a’ and ‘b’ being whole numbers, (a – b) may not be a whole number.

(b) For ‘a’ and ‘b’ being whole numbers (b ? 0), a ÷ b may not be whole number.

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space space space space

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 space space space space
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 space space space space equals space space 9 over 16 open square brackets 0 over 36 close square brackets equals 9 over 12 cross times 0 space equals space 0

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negative 2 over 3 cross times 3 over 5 plus 5 over 2 minus 3 over 5 cross times 1 over 6

negative 2 over 3 cross times 3 over 5 plus 5 over 2 minus 3 over 5 cross times 1 over 6 space equals space open square brackets negative 2 over 5 cross times 3 over 5 plus open parentheses fraction numerator negative 3 over denominator 5 end fraction close parentheses cross times 1 over 6 close square brackets plus 5 over 2
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equals fraction numerator negative 3 over denominator 5 end fraction cross times 5 over 6 plus 5 over 2 space equals space fraction numerator negative 1 over denominator 2 end fraction plus 5 over 2 space equals space fraction numerator negative 1 plus 2 over denominator 2 end fraction
equals space 4 over 2 space space equals space 2
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Find using distributivity.
open curly brackets 7 over 5 cross times open parentheses fraction numerator negative 3 over denominator 12 end fraction close parentheses close curly brackets plus open curly brackets 7 over 5 cross times 7 over 12 close curly brackets

open curly brackets 7 over 5 cross times open parentheses fraction numerator negative 3 over denominator 12 end fraction close parentheses close curly brackets plus open curly brackets 7 over 5 cross times 5 over 12 close curly brackets equals 7 over 5 cross times open square brackets fraction numerator negative 3 over denominator 12 end fraction plus 5 over 12 close square brackets

space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 7 over 5 cross times open square brackets fraction numerator negative 3 plus 5 over denominator 12 end fraction close square brackets space equals space 7 over 5 cross times 2 over 12 space equals space 7 over 30
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