Solve 7x – 9 = 3x + 2

aim is to move all numbers to one side and all the x to one side.
whatever you do to one side, you must do to the other side.
For example I want to remove -9 on the left by adding +9 to left side but I need to add +9 to right side as well
7x-9 + 9= 3x + 2 + 9
tidy it up7x=3x + 11
now remove 3x from both sides
7x-3x=3x-3x +11tidy it up4x=11and now tidy this up4x=11 and so x=11/4 which is 2.75

Answered by Shahswar Z. Maths tutor

4344 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

Find the roots of this equation: y=(8-x)lnx


Show that Sec2A - Tan2A = (CosA-SinA)/(CosA+SinA)


How would you differentiate 3x^4 - 2x^2 + 9x - 1


Solve for 0 =< x =< 360 16/(cos(x+25)+1) = 10, give answers to 2 d.p.


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