Chapter 1: Q72. (page 24)

Evaluate the expression when $x = 2 and y=8$
localid="1649145470856" $6 (x + y)$

Short Answer

Expert verified

The value of the expression is60.

Step by step solution

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.

Step-2 – Evaluate expression inside grouping symbol

To evaluate the given expression $6 (x + y)$ , substitute 2 for x and 8 for y and simplify the expression inside the parenthesis as shown below

$\begin{array}{l} 6 (x + y) = 6 (2 + 8) \\ = 6 (10) \end{array}$

Step-3 – Multiply the numbers

Now to simplify further, multiply the numbers to get

$\begin{array}{l} 6 (10) \\ = 60 \end{array}$

Thus, the value of the expression is 60.

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Evaluate the expression when $x = 2 and y=8$
localid="1649145470856" $6 (x + y)$

Short Answer

Step by step solution

Step-1 – Order of operations

Step-2 – Evaluate expression inside grouping symbol

Step-3 – Multiply the numbers

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Evaluate the expression when x=2and y=8localid="1649145470856" 6x+y

Short Answer

Step by step solution

Step-1 – Order of operations

Step-2 – Evaluate expression inside grouping symbol

Step-3 – Multiply the numbers

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Discrete Mathematics

Decision Maths

Mechanics Maths

Applied Mathematics

Theoretical and Mathematical Physics

Logic and Functions

Study anywhere. Anytime. Across all devices.

Evaluate the expression when $x = 2 and y=8$
localid="1649145470856" $6 (x + y)$