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Chapter 1: Q29. (page 9)

Find the value of each expression

129+5-3

Short Answer

Expert verified

Value of 129+5-3 is -3

Step by step solution

01

- Order for simplification 

To evaluate any expression involving more than one operation, follow the below order of operations:

  • First evaluate expressions inside grouping symbols like parentheses ( ) or brackets [ ].
  • Evaluate the exponents.
  • Perform Multiplication and division from left to right.
  • Perform addition and subtraction from left to right.
02

- Simplify expression inside grouping symbol

To evaluate the value of the given expression, first simplify the expression inside the bracket as shown below

129+5鈭�3=129+鈭�15=12鈭�6

03

- Divide by 2

Now, to simplify further divide the numbers to get

12鈭�6=鈭�62=鈭�3

Thus, value of 129+5-3is -3

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Most popular questions from this chapter

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MEDICINE

Suppose a patient must take a blood pressure medication that is dispensed in 125-milligram tablets. The dosage is 15 milligrams per kilo gram of body weight and is given every 8 hours. If the patient weighs 25 kilograms, how many tablets would be needed for a 30-day supply? Use the formula n=24d梅8b脳15梅125, wheren is the number of tablets,d is the number of days the supply should last, andb is the body weight of the patient in kilograms.

Name the property illustrated by each equation.

12779=1
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