Make Subject Of (Formula)
Making a subject of a formula in algebra involves rearranging an equation to express one variable in terms of the others. This topic helps students apply inverse operations step by step to isolate the required variable accurately and strengthen their algebraic manipulation skills.
In this course, we will go through three common techniques used to solve Make Subject Of questions effectively.
Related Lessons:
“Make Subject Of” – Two Fractions
For Make Subject Of questions with two fractions, we can follow 5 simple steps:
Step 1: Squared both sides of the equation (if the expression has square root term)
Step 2: Cross multiply both fractions
Step 3: Expand algebraic expression on both sides to remove all the brackets
Step 4: Collect subject to one side, all other terms to the other side
Step 5: Factorise subject on the left, and divide to get the final answer
“Make Subject Of” – Three Or More Fractions
For Make Subject Of questions with 3 or more terms, we can apply the following steps:
Step 1: Multiple with the LCM to remove all the denominators
Step 2: Expand all the terms to remove all the brackets
Step 3: Collect subject to one side, all other terms to the other side
Step 4: Factorise subject on the left, and divide to get the final answer
“Make Subject Of” – Two Special Cases
In this final video on Make Subject Of, we will go thru two special cases and learn how to handle them.