Here's how to solve the equation step-by-step:
1. Multiply both sides by 42 to eliminate the denominators:
$$42 \cdot \frac{7x+28}{42} = 42 \cdot \frac{18x-12}{42}$$
This simplifies to:
$$7x + 28 = 18x - 12$$
2. Move the terms with x to one side and the constants to the other side:
Subtract 7x from both sides:
$$7x + 28 - 7x = 18x - 12 - 7x$$
$$28 = 11x - 12$$
Add 12 to both sides:
$$28 + 12 = 11x - 12 + 12$$
$$40 = 11x$$
3. Solve for x by dividing both sides by 11:
$$\frac{40}{11} = \frac{11x}{11}$$
$$x = \frac{40}{11}$$
Therefore, the solution to the equation is:
$$\boxed{x = \frac{40}{11}}$$
Answer: x = 40/11