Let's solve the expression:

\[
21 + 5 \times 7 - 6
\]

Following the order of operations (PEMDAS: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction):

1. **Multiplication** first:
   \[
   5 \times 7 = 35
   \]

2. Now substitute the result into the expression:
   \[
   21 + 35 - 6
   \]

3. Perform **addition** and **subtraction** from left to right:
   \[
   21 + 35 = 56
   \]
   \[
   56 - 6 = 50
   \]

So, the final result is:
\[
\boxed{50}
\]

Would you like more details or have any questions?

Here are 5 related questions to try:

1. \( 10 + 3 \times 8 - 4 \)
2. \( 15 - 2 \times (3 + 4) \)
3. \( 30 + 6 \times 4 - 12 \)
4. \( 50 \div 5 + 6 \times 3 \)
5. \( 100 - 4 \times 5 + 20 \)

**Tip:** Always remember to follow the order of operations (PEMDAS) when solving expressions.

Learn how to solve the arithmetic expression 21 + 5 x 7 - 6 by applying the order of operations (PEMDAS). This step-by-step guide covers multiplication and basic addition and subtraction, suitable for students in Grades 5-7.

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