Let's solve the expression step by step:

\[
1 - 5 + 1 - 5 + 1 - 5
\]

1. Start by simplifying the expression from left to right:

\[
1 - 5 = -4
\]

2. Then:

\[
-4 + 1 = -3
\]

3. Continue:

\[
-3 - 5 = -8
\]

4. Next:

\[
-8 + 1 = -7
\]

5. Finally:

\[
-7 - 5 = -12
\]

So, the value of the expression is:

\[
\boxed{-12}
\]

Would you like more details or have any questions? Here are some related questions:

1. What is the order of operations in arithmetic?
2. How do you simplify longer arithmetic expressions?
3. What is the difference between subtracting a number and adding a negative number?
4. How does the associative property affect addition and subtraction?
5. Can you solve similar expressions with parentheses?

**Tip:** Always follow the order of operations (PEMDAS/BODMAS) to avoid mistakes in more complex expressions.

Learn how to simplify the arithmetic expression 1 - 5 + 1 - 5 + 1 - 5 step by step. This solution explains key concepts of addition and subtraction while emphasizing the importance of the order of operations (PEMDAS/BODMAS). Suitable for students in Grades 5-7.

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