Rearrange the following, making c the subject: (3c + b)/2 = c + a

Rearranging is one of the trickier topics in GCSE maths, however as long as you follow it through step by step you shouldn't have a problem.

The question asks you to make 'c' the subject. This means you need to get 'c' on one side of the equation, and all the other terms on the other side of the equation.

Firstly, you should multiplty everything through by 2 to get rid of the fraction:

3c + b = 2(c + a)

3c + b = 2c + 2a

Then, by adding and subtracting terms, move all of the 'c' terms on to one side of the equation and all of the other terms on to the other side of the equation:

3c - 2c = 2a - b

Therefore, your final solution is:

c = 2a - b

Answered by Olivia C. Maths tutor

14102 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve the simultaneous equations. (1) 2x + y = 18 (2)x − y = 6


Show me why the product of a squared and a cubed is a to the power of 5.


What is a good way to remember the sine, cosine and tangent rules of a triangle?


I'm struggling with approaching questions in Maths, I just don't know where to start. What should I do?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences