Solve 2x+1=11

When faced with a question like this, the aim is to work out the value of "x". What this question basically means is "what number can we multiply by 2 and add 1 onto it to get 11. There a few methods to tackle this question, one of which involves taking away the numbers from one side and adding them to the other whilst leaving the x on the other side, followed my dividing through by the coefficient of x, giving x = 5.Another method is to construct a number line and mark the number 11 on it, then from 0 we can draw one jump to 1, then we know the rest of the space between 1 and 11 represent the value of 2x. So 2x = 10 and from this we can work out that x = 5 (This method makes much more sense when drawn out).

Answered by Molly I. Maths tutor

4431 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

If a right-angled triangle has one side measuring 8cm and another measuring 15cm, what is the length of the hypotenuse?


An triangular prism has base xcm, height (x+4)cm and length 4xcm. Find the volume of the prism in terms of x. Find the volume when x=2cm.


How do you factorise?


At a football game number of men : number of women : number of children = 13 : 5 : 7 There are 4152 more men than women. Work out the number of children at the game.


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 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences