#36 With division by inspection
#54 Solving for x when it's cubed
#55 Solving for x using addition and division
#56 Simple linear equation
#75 Solving for x using multiplication
#85 Solve for x in linear equations with multiplication required
#131 Tricky word problem, solving for two unknowns using one variable
#220 Solving for x when rooting is needed
#219 Solving equations with fractions
#267 Solving for x when it's an exponent