Step 1: Distribute (multiply) the number outside the parenthesis to the variable and number inside.
Step 2: rewrite your equation now that you've simplified the right side
Step 3: Use inverse operations to move your variables to the left side
Step 4: if all of your variables drop out, if the remaining equation is true (4=4, 9=9) there are infinitely many solutions, if the remaining equation is false, there are no solutions.