Start Equation Isolation: Start with the equation 9+5u=7u−9. To isolate the variable u, we need to get all the u terms on one side and the constant terms on the other side.
Subtract 5u: Subtract 5u from both sides to move the u terms to one side.9+5u−5u=7u−9−5uThis simplifies to:9=2u−9
Add 9: Add 9 to both sides to move the constants to the other side.9+9=2u−9+9This simplifies to:18=2u
Divide by 2: Divide both sides by 2 to solve for u.218=22uThis simplifies to:u=9
More problems from Solve linear equations with variables on both sides