Lesson 1

The value of x is definitely positive, because -x is negative (for example, -(-1.5)=1.5). The value of x is definitely between 1 and 2, since the distance of -x from 0 is a little greater than 1. The value of x could be 112 or 1.4; these values are halfway (or a little less than halfway) between 1 and 2. ................
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