Make x the subject of the equation y=(3x+5)/(4-x)

(1) Get rid of the fraction by multiply both sides by (4-x), we now have y(4-x)=3x+5. (2) Expand any brackets, so 4y-py=3x+5. (3) Rearrange to get all the x to one side: 4y-5=3x+px. (4) Factorise x because we want x by it self in the end: leaving us 4y-5=x(3+y). (5) Divide both side by 3+y, hence x=(4y-5)/(3+y).

Answered by Gwen F. Maths tutor

11581 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Show that ((√ 18 + √ 2)^2)/(√8 - 2) can be written in the form a(b + 2) where a and b are integers.


Change of subject question. Make 'a' the subject of the formula v = u + at.


root3 (root6 + root12) can be written as Aroot2 + B


Solve the following set of equations. 3x + 2y = 5, 2x + 3y =6


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences