To solve the equation \( 2.3 = j - \frac{4.2}{2} \), let’s follow these steps:

1. Simplify the right side by dividing \(4.2\) by \(2\):
   \[
   2.3 = j - 2.1
   \]

2. Add \(2.1\) to both sides to isolate \(j\):
   \[
   j = 2.3 + 2.1
   \]

3. Calculate the sum:
   \[
   j = 4.4
   \]

So, the solution is:
\[
j = 4.4
\]

Would you like further details or have any questions?

Here are related questions you might find helpful:
1. How do you solve equations with fractions or decimals?
2. What are methods to isolate variables in an equation?
3. Can you show examples of other single-variable equations?
4. How do you check the solution to an equation?
5. What happens if an equation has multiple solutions?

**Tip:** When solving equations, simplify each term step-by-step to avoid errors.

Learn how to solve the linear equation 2.3 = j - 4.2 / 2 with step-by-step guidance. This example focuses on isolating the variable and managing decimal operations, ideal for students in Grades 6-8.

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