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Chapter 1: Q57. (page 36)

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

localid="1649147484508" 3x+y

Short Answer

Expert verified

The value of the expression is30.

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 – Multiply from left to right

To evaluate the expression 3x+y, substitute 6 for x and 12 for y in the given expression and simplify further as shown below

3x+y=3鈰�6+12=18+12

03

Step-3 – Add the numbers

Now to simplify further, add the numbers to get

3x+y=18+12=30

Thus, the value of the expression is 30.

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