Solve the simultaneous equations. 2x + y = 18, x−y=6

In this question, we are going to find the values of x and y from the equations above. To start off, we will number the equations:(1): 2x+y=18(2): x-y=6now we will add (1) to (2) as that will get ride of the y component and we can solve for x. Now we have that 3x=24. we can divide through by 3, getting x=24/3=8. now we can substitute that into (1) getting that 2(8)+y=18, hence we get that y=18-16=2. we can double check these by subbing the values into (2) and checking they hold.

RR
Answered by Ruby R. Maths tutor

4079 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Expand the brackets in the following expression and indicate what the graph would look like: y=(5x+1)(2x-3)


what is 0.777... as a fraction?


Make x the subject of the equation. 7xy+6 = 18x+3y+7


The angle of elevation to the top of a tree is 63 degrees. Given that the distance to the tree is 15 m and your height is 1.6 m, how tall is the tree?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning