Chapter 1: Q11. (page 18)

Evaluate the expression $11 \cdot 7 - 9 \cdot 5$

Short Answer

Expert verified

The value of expression is $32$ .

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 – Multiply the numbers from left to right

To evaluate the given expression, first multiply the numbers from left to right as shown below

$\begin{matrix} 11 \cdot 7 - 9 \cdot 5 = 77 - 9 \cdot 5 \\ = 77 - 45 \end{matrix}$

Step-3 – Subtract the numbers

Now, to simplify further subtract the resulting numbers to get

$\begin{matrix} 11 \cdot 7 - 9 \cdot 5 = 77 - 45 \\ = 32 \end{matrix}$

So, the value of the expression is $32$ .

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Evaluate the expression $11 \cdot 7 - 9 \cdot 5$

Short Answer

Step by step solution

Step-1 – Order of operations

Step-2 – Multiply the numbers from left to right

Step-3 – Subtract the numbers

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Evaluate the expression11⋅7−9⋅5

Short Answer

Step by step solution

Step-1 – Order of operations

Step-2 – Multiply the numbers from left to right

Step-3 – Subtract the numbers

One App. One Place for Learning.

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Evaluate the expression $11 \cdot 7 - 9 \cdot 5$