1. **State the problem:** Emma bought 4 identical notebooks and a pen for 3 each, and her total was 35. We need to find the cost of each notebook. 2. **Define variables:** Let the cost of each notebook be $x$. 3. **Write the equation:** The total cost is the sum of 4 notebooks and 1 pen. $$4x + 3 = 35$$ 4. **Solve for $x$:** Subtract 3 from both sides: $$4x = 35 - 3$$ $$4x = 32$$ Divide both sides by 4: $$x = \frac{32}{4}$$ $$x = 8$$ 5. **Answer:** Each notebook costs 8. This means each notebook costs 8, given the total and the pen price.