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

As both equations have y on the left hand side we can put the right hand sides equal to each other, so 2x=x+3. We can then subtract x from both sides. This gives 2x-x on the left hand side which is x, and x+3-x on the right hand side which is eqaul to 3. If we put these into 2x=x+3 we have x=3. Now we need to find y. In the question we are given that y=2x, therefore y=2*3=6.

HC
Answered by Hannah C. Maths tutor

8017 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Find the median, upper and lower quartiles of these numbers: 160, 390, 169, 175, 125, 420, 171, 250, 210, 258, 186, 243


What is the difference between unconditional and conditional probability?


Show that ((sqrt(18)+sqrt(2))^2)/(sqrt(8)-2) can be written in the form a(b + 2) where a and b are integers.


You are given that f(x) = cx + d and that f(0) = -6 and f(2) = 10. Find the values of c and d.


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