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Chapter 1: Q26. (page 9)

Find the value of each expression

1-30梅7+3-4

Short Answer

Expert verified

Value of1-30梅7+3-4 is 7

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 ( ) , brackets [ ] or braces { }.
  • 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 parenthesis and then simplify the expression inside braces as shown below

1鈭�30梅7+3鈭�4=1鈭�30梅7+鈭�12=1鈭�30梅鈭�5=1鈭�鈭�6

03

- Subtract from 1

Now, to simplify further subtract the numbers to get

1--6=7

Thus, value of1-30梅7+3-4 is 7

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