Today in class we have learnt Algebra. Algebra is when a letter and shapes takes the place of a number and if there is a, a and b that means you can find the number but it is unknown but it will just be the equation that is there for example 2a-3b+5b+b it will stay the same because they are different but if it was 2a+3a it will equal 5a because they are the same letters and they can be determined.
