`[(169xx121)div(11xx13)]-3=`?

Options

A. 135
B. 140
C. 317
D. 143

Answer

To solve the expression \([(169 \times 121) \div (11 \times 13)] - 3\), we will follow these steps:

### Step 1: Calculate \(169 \times 121\)
First, we need to multiply 169 by 121.

\[ 169 \times 121 = 20449 \]

**Hint:** To multiply two numbers, you can use the standard multiplication method or break them down into smaller parts.

### Step 2: Calculate \(11 \times 13\)
Next, we will multiply 11 by 13.

\[ 11 \times 13 = 143 \]

**Hint:** Multiplying two small numbers can often be done mentally or by using the multiplication table.

### Step 3: Divide the results from Step 1 and Step 2
Now, we will divide the result of \(169 \times 121\) by \(11 \times 13\).

\[ \frac{20449}{143} = 143 \]

**Hint:** Division can be simplified by checking how many times the divisor fits into the dividend.

### Step 4: Subtract 3 from the result
Finally, we will subtract 3 from the result obtained in Step 3.

\[ 143 - 3 = 140 \]

**Hint:** Subtraction is straightforward; just take away the second number from the first.

### Final Answer
The final result of the expression \([(169 \times 121) \div (11 \times 13)] - 3\) is:

\[ \boxed{140} \]