Equations and formulae tests (with solutions)

Three tests on equations and formulae. One elementary test on solving simple linear equations, linear equations with the variable on both sides, linear equations with brackets or fractions and rearranging formulae. And two tests on multiplying out brackets, simplifying expressions by collecting like terms, factorising expressions, solving equations with brackets and rearranging formulae to change the subject. Detailed solutions are included. Can be used as a worksheet.