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Subtract: 

(i) 3 from –4 (ii) –3 from –4

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(a) The additive inverse of 3 is –3. 

So, – 4 – 3 = – 4 + (–3) = – (4 + 3) = –7 

(b) The additive inverse of –3 is + 3. 

So, – 4 – (–3) = – 4 + (+3) = –1

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