Let's solve the expression step by step.

Given:  
\[
(12 + 18) \div 3 \times 7
\]

1. First, solve the expression inside the parentheses:
\[
12 + 18 = 30
\]

Now the expression becomes:
\[
30 \div 3 \times 7
\]

2. Next, perform the division from left to right:
\[
30 \div 3 = 10
\]

3. Finally, multiply by 7:
\[
10 \times 7 = 70
\]

The result is **70**.

Would you like more details or have any other questions? Here are 5 questions to consider:

1. What happens if the parentheses were placed differently?
2. How does changing the order of operations affect the result?
3. What if the expression included exponents?
4. How do parentheses influence complex expressions?
5. What other operations can change the outcome of this expression?

**Tip:** Always follow the order of operations (PEMDAS: Parentheses, Exponents, Multiplication and Division (left to right), Addition and Subtraction (left to right)).

Learn how to solve the arithmetic expression (12+18)÷3x7 by following the order of operations (PEMDAS). This step-by-step guide breaks down the problem to help students in Grades 5-7 understand key mathematical concepts. The final result is 70.

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