It looks like you have a math problem involving finding the value of \( x \) in several equations. The equations seem to be labeled from (a) to (d). Here's a brief outline of how you can solve them step by step:

1. **For each equation**, isolate \( x \) or manipulate the equation to get \( x \) on one side.
2. **Combine like terms** and simplify where necessary.
3. **Factor** if applicable, or use the quadratic formula if you end up with a quadratic equation.
4. **Check your solutions** by plugging them back into the original equations to ensure they hold true.

If you want to solve a specific equation or step, let me know!