Given X + 3Y = 19 and 2X - Y = 10, find X and Y

This is a simple simultaneous equationFirst we multiply the second equation by 3 to get 6X - 3Y = 30Then we add the first and second equation together to get 6X + X +3Y - 3Y = 30 + 19which we simply to 7X = 49 which therefore means X = 7which now means we can work out Y given X = 7 then 2X - Y = 10 -----> 14 - Y = 10 giving us that Y = 4

GV
Answered by Guillermo V. Maths tutor

3199 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

200 pupils are taking a school trip. Some are flying, some are taking the bus. There are three times as many boys going as girls. One third of the boys going are flying. How many boys are getting the bus?


How do you know which circle theorems to use when answering a question?


Expand the following (x+4)(x+2)


How do I find the nth term of a sequence?


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:

© 2025 by IXL Learning