GCSE Secondary Maths Age 13-17 - Algebra: Subject of a Formula - Explained

The video tutorial explains how to change the subject of a formula, specifically focusing on making 'a' the subject when it appears in two places. The process involves eliminating fractions, rearranging terms, and factorizing to isolate 'a'. The tutorial provides a step-by-step solution to a specific problem, highlighting key steps such as cross-multiplication and factorization. It concludes with a marking scheme and a recap of the solution process.

What is the first step to make 'a' the subject of the formula P = (3a + 5) / (4 - a)?

Explain how to eliminate the fractions in the equation before isolating 'a'.

Describe the process of factorizing to isolate 'a' in the equation.

What is the final expression for 'a' after rearranging the formula?

List the marks allocated for each step in the process of rearranging the formula.