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Chapter 1: Q58. (page 36)

Evaluate the expression when x=6andy=12. (Lesson 1.3)

localid="1647503467763" 3x+y

Short Answer

Expert verified

The value of the expression is54.

Step by step solution

01

Step-1 – Order of operations

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

Step-2 – Evaluate expression inside grouping symbol

To evaluate the expression 3x+y, substitute 6 for x and 12 for y in the given expression and simplify the expression inside the parenthesis as follows

3x+y=36+12=318

03

Step-3 – Multiply the numbers

Now to simplify further, Multiply the numbers to get

3x+y=318=3鈰�18=54

Thus, the value of the expression is 54.

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