Question
Evaluate: [1 MARK]
−13+(−69)+57−(−89)−(53+(−49))
Answer: Option A
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Solution: 1 Mark
−13+(−69)+57−(−89)−(53+(−49))
=−13−69+57+89−(53−49)
=−13−69+57+89−53+49
First, take all ‘−’ terms and then take all ‘+’ terms and add them,
=(−13−69−53)+(57+89+49)
=−135+195
=60
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