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Question
Find the value of 7 – (–10) using number line
Sum
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Solution
We start at zero facing positive direction.
Move 7 units forward to represent (+7).
Then turn towards the negative side and move 10 units backwards.
We reach +17
∴ 1 – (–10) = +17
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Chapter 1: Number System - Exercise 1.2 [Page 14]
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