Solve for X and Y: 2y + x = 7; 3y - x = 8

x=1, y=3; Firstly, rearranging for x in the first equation: x = (7-2y); Substitute this into the second equation: 3y - (7 -2y) = 8; Expand: 3y -7 +2y = 8 (watch negative) 3y +2y = 15 Therefore, 5y = 15 and y=3. Now substitute Y into either of the equations to find x: 2(3) + x = 7 6 + x = 7 Therefore x = 1.

RK
Answered by Ruth K. Maths tutor

5146 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Find an equation of the straight line that is perpendicular to the straight line x + 3y = 7 and that passes through the point (4,9).


If there are 20 marbles in a bag and 1/5 are red, what fraction are red if 1 more red marble is added?


https://revisionmaths.com/sites/mathsrevision.net/files/imce/1MA0_1F_que_20160526.pdf Question 5


In year 11, 3/7 of pupils go on holiday abroad in the summer break. Out of these, 1/3 go to France. Determine the ratio of pupils who go to France in summer to pupils who do not go to France in summer.


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:

© 2025 by IXL Learning