How do I make x the subject of the formula?

5x+11=(y+2)/2
Best way to think about this is like its a normal equation where you're trying to find the value of x, just break it down into simple steps. The best thing to do first is to get rid of any fractions, we can do this by multiplying the equation by 2.
10x+22=y+2 (x 2)
Now we need to get x on its own, so we minus 22 from both sides
10x+22-22=y+2-22 --> 10x=y-20
Finally we divide both sides by 10
x=(y-20)/10
(Do lots more examples to help)

Answered by Isabelle O. Maths tutor

11264 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

How do I solve a simultaneous equation?


factorise fully: 10pq +15pqr


There are 35 people in a group. x(x+1) of them have a blue car, 5x of them have a red car, 4 have a blue and a red car and 4x-8 do not have car. Work out the probability that a person who has a blue car, has a red car as well.


Find the equation of the straight line passing trough the points (-2,1 ) and (1, 4).


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