Final answer:
To find the total number of cakes Nadia baked, the equation is x = 11 + 7. Solving this equation, we get x = 18, which means Nadia baked a total of 18 cakes.
Step-by-step explanation:
The student is asking for an equation to determine the total number of cakes Nadia baked, given that she sold 11 and has 7 left.
To find the total number baked, we use the equation:
x = 11 + 7
The left side of the equation, 'x,' represents the total number of cakes Nadia baked.
The right side of the equation adds the number of cakes sold (11) to the remaining cakes (7).
By simplifying the equation, we find:
x = 18
Nadia baked a total of 18 cakes to sell.
This is a simple algebra problem that demonstrates how to form and solve an equation.