Solve the simultaneous equations 3x +y =11 and 2x+y=8

Equation 1: 3x+y= 11, Equation 2: 2x+y=8. You want to find out what x is and what y is.In both equations there is only 1 unit of y therefore it is easiest to rearrange the first equation so that it equals y this will become your equation 3. Equation 3: y=11-3x, Equation 2: 2x+y=8. Substitute equation 3 into equation 2. 2x+ 11-3x= 8 , 11-x=8, x= 11-8, x=3 Substitute x back into equation 3y=11-3x, y= 11-3(3), y=11-9, y=2. Therefore x= 3 and y= 2

KM
Answered by Kathryn M. Maths tutor

4727 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

What is the equation of the tangent of the circle x^2+y^2=25 at the point (3,4)


Calculate the area of a circle where the circumference of the circle and sides of the square are tangential at 4 points.


x = 0.045 (45 recurring). Prove algebraically that x can be written as 1/22


Mark has a voucher that gives him 22% off the prices at a hardware store. Estimate how much he will pay for an electric drill that normally costs £87.99. (non-calculator) (3)


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:

© 2026 by IXL Learning