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Chapter 1: Q14. (page 48)

Evaluate each expression if a=12,b=0.5,c=-3and d=13

6b-5c

Short Answer

Expert verified

Expression 6b-5c results into 18.

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

– Perform Substitution

To evaluate given expression, first substitute the value of 0.5 for b and -3for c in expression.

6b-5c=60.5-5-3

03

– Perform Simplification

To simplify further, multiply the terms from left to right then perform addition in the terms.

60.5鈭�5鈭�3=3+15=18

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