Concept explainers
To simplify: the given expression using a number line.
Answer to Problem 6WE
The result of the given expression is
Explanation of Solution
Given Information:
An expression
The given expression can be expressed in a number line as shown below and then the result can be found as follows
(1) 5 implies marking 5 units from center point to right
(2) From the previous point, 15 units are to be marked to left corresponding to the number -15. (3) The coordinate in the previous step is at -10. From this point, 7 units are marked to right making the final position to be at -3.
This gives the final answer of the given expression using the number line which is -3.
Analytically this can be checked as,
Hence, the simplification of the given expression is obtained.
Chapter 2 Solutions
Algebra: Structure And Method, Book 1
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