ABC News’ Alexis Christoforous reports on e.l.f. Beauty’s acquisition of Hailey Bieber's skincare brand.

For students between the ages of 11 and 14. Collecting like terms Learn what like and unlike terms are and simplify algebraic expressions by collecting like terms with this BBC Bitesize Maths article.

An extra final step will be needed to simplify the numerator ... fractions is similar to the method for numerical fractions. However some expressions may need to be factorised at the start ...