Solve these simultaneous equations: 2x + 3y = 19 and x + 4y = 17.

By multiplying everything in equation 2 by 2, you get 2x + 8y = 34. If you then subtract equation 1 from this you get 5y = 15. Thus y = 3, going back to equation two, and subbing y back in, x + 12 = 17, therefore x = 5.

JH
Answered by James H. Maths tutor

3685 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Prove that (2n+3)^2-(2n-3)^2 is a multiple of 8 for positive integer values of n


Find the length of AB from the right-angle triangle ABC. Angle ACB = 40 degrees and side BC = 15cm.


Write x^2+4x-12 in the form (x+a)^2+b where 'a' and 'b' are constants to be determined.


Triangle ABC is a triangle with a right angle at vertex B. Length BC = 6cm and angle A = 30 degrees. How long is length AC?


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