Computer Science Illuminated
Computer Science Illuminated
6th Edition
ISBN: 9781284055917
Author: Nell Dale, John Lewis
Publisher: Jones & Bartlett Learning
Question
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Chapter 3, Problem 35E
Program Plan Intro

Given information:

  • The signed value of A is 5.
  • The signed value of B is -7.

Number Line:

  • Number line is a line used to represent the real numbers in a horizontal line.
  • Every point in a horizontal line represents a real number.
  • Positive numbers are represented to the right of zero and negative numbers are represented to the left of zero.
  • Number line is mainly used for the operation of basic addition and subtraction performed on negative numbers.

Computer Science Illuminated, Chapter 3, Problem 35E

Explanation of Solution

b.

Proving solution to the operation “A-B”:

To evaluate the result of the given expression “A-B”, substitute the value of A as 5 and B as -7 in the expression. The result is,

AB=5(7)</

Explanation of Solution

c.

Proving solution to the operation “B+A”:

To evaluate the result of the given expression “B+A”, substitute the value of B as -7 and A as 5 in the expression. The result is,

B+A=(7)+5=<

Explanation of Solution

d.

Proving solution to the operation “B-A”:

To evaluate the result of the given expression “B+A”, substitute the value of B as -7 and A as 5 in the expression. The result is,

BA=(7)5<

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