3x + 2y =4 and 4x - 17 = 5y. Solve the simultaneous equations.

  1. write out each equation one underneath the other so that the x’s are in one column and the y’s are in another.2) we also need to make sure that the numbers are also aligned up3) for 4x - 17 = 5y, we can add 17 to both sides of the equation. That leaves us with 4x = 5y + 17.4) now, we need to minus 5y from both sides. That leaves us with 4x - 5y =175) we need to get either of the coefficients (numbers in front of the x and y) the same in both equations. for example, we can choose to make both the x’s the same. To do that, we can multiply (3x + 2y = 4) by 4 and (4x - 17 = 5y) by 3.that gives us 12x

Related Maths GCSE answers

All answers ▸

How do you factorise x^2 -4 = 0?


Sarah’s collection contains dresses, skirts and blouses. If the ratio of dresses to skirts is 7 to 4 and the ratio of skirts to blouses is 7 to 2, what is the ratio of dresses to blouses?


If a right-angled triangle has one side measuring 8cm and another measuring 15cm, what is the length of the hypotenuse?


How do I skecth a grpah of y = x^2 - 7x + 10?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences