1. Solve for x and check.
First, remove parentheses.
Combine like terms
Transpose x terms to one side and numbers to the other.
Combine like terms.
Divide both sides by the coefficient of the unknown
Copy down the original equation
except copy down the solution in parentheses wherever you see the unknown.
This gives us an order of operations problem. Do what's inside the parentheses first. Inside each parentheses is a multiplication and a subtraction problem. Do the multiplication first, and copy down the rest of the problem.
Next, subtract inside the parentheses.
Do the multiplications first.
and it checks.
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