Define x and y if 3x+y=11 and 5x-2y=11

This is a simultaneous equations question. In this situation the equations can be multiplied to create a common coefficient: 3x+y=11 therefore 6x+2y=22You can then add the equations together: 6x+2y=22 plus 5x-2y=11 therefore 11x=33 and x=3Subbing x=3 into one of the initial equations allows you to solve for y:3x+y=11 therefore 3(3)+y=11 therefore 9+y=11 therefore y=2Check these answers by substituting x and y into the other equation: 5(3)-2(2)=15-4=11Therefore x=3 and y=2

JM
Answered by Jonathan M. Maths tutor

3789 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve the following fractional quadratic equation 14/(x^2-9)+1/(3-x)+(4-x)/(x+3)=7/(x+3), assuming x=/=+-3.


Solve the simultaneous equations. x^2 + 2y=9, y-x=3


Solve the simultaneous equations: 1) 4x - 2y = 28, 2) 4y - 3x = -36.


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


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences