Solve the simultaneous equations to find x and y: 3y - x = 12 y + 2x = -3

3y - x = 12 (1)y + 2x = -3 (2)multiply equation (2) by 3: 3y + 6x = -9 (3)subtract equation (1) from equation (3): 3y + 6x - 3y + x = -9 -12 7x = -21 x = -3substitute x into equation (2): y -6 = -3 y = 3answer: x = -3 y = 3

Answered by Chloe G. Maths tutor

3506 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Find Solution to x^2 + x - 2=0


Convert 0.22222222... (recurring) into a fraction


How do I know when to use SOHCAHTOA and when to use the sine or cosine rule?


Expand and simplify (2x + 5) (3x - 2)


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