Solve the simultaneous equations. 2x+5y=-4 and 7x+y=19

This can be solved using either substitution or elimination. I think this question is best approached by elimination.By elimination: Multiply the second equation by 5. The minus the first equation from the new second equation. This will give 33x=99. This can be solved as x=3. When substituting this into the first equation, we get 6+5y=-4, so 5y=-10 and y=-2.

NW
Answered by Nisha W. Maths tutor

2809 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Write x^2 – 10x + 12 in the form (x – a)^2 + b , where a and b are integers.


Write x^2 - 6x +7 in the form (x+a)^2 +b


Write (x-2)/3 + (x+3)/5 as a single fraction


Factorise 2b^2 + 6b


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