Verify that x=6x=6x=6 is a solution of x+7=13x + 7 = 13x+7=13
Verify that h=173\displaystyle h=\frac{17}{3}h=317 is a solution of 3h−5=123h - 5 = 123h−5=12
283 exam-style questions on AQA GCSE Maths Solving Equations. Each one has a worked solution and a mark scheme showing where the marks go.