Chapter 1: Q. 15MCQ (page 27)

Evaluate the expression when $x = 20 and y = 5$ .
$\frac{x + 5}{y}$

Short Answer

Expert verified

The value of the expression is5.

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.

. Multiply from left to right

To evaluate the given expression $\frac{x + 5}{y}$ , substitute 20 for x and 5 for y and simplify further as shown below

$\begin{matrix} \frac{x + 5}{y} = \frac{20 + 5}{5} \\ = \frac{25}{5} \end{matrix}$

Step 3 . Divide the numbers

Now to simplify further, divide the numbers to get

$\begin{array}{l} \frac{25}{5} \\ = 5 \end{array}$

Thus, the value of the expression is 5.

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Evaluate the expression when $x = 20 and y = 5$ .
$\frac{x + 5}{y}$

Short Answer

Step by step solution

Step 1 . Order of operations

. Multiply from left to right

Step 3 . Divide the numbers

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Evaluate the expression whenx=20andy=5.x+5y

Short Answer

Step by step solution

Step 1 . Order of operations

. Multiply from left to right

Step 3 . Divide the numbers

One App. One Place for Learning.

Most popular questions from this chapter

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Evaluate the expression when $x = 20 and y = 5$ .
$\frac{x + 5}{y}$