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Wagdy · Answer 1 · 2017-04-02T01:08:09+0000

You are adding a negative and a positive. It is like subtracting 2.1 from 3.26. Because 2.1 is negative, whenever you add it to a number, you actually subtract. To do this:
3.26 + (-2.1) is like 3.26 - 2.1
3.26 - 2.1 = 1.16

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