Find the values of X and Y from the simultaneous equations: 1) 2x + 5y = 33 2) x + 3y = 19

  1. 2x + 5y = 33 2) x + 3y = 19
    multiply equation 2 by a factor of 2 giving you 2x + 6y = 38 Your two equation are now: 1) 2x + 5y = 33 3) 2x + 6y = 38
    Subtract 3 from 1 to eliminate the x's Giving you Y = 5
    Now, as you know Y = 5 replace Y in either of the original equations to get your vaule for X. Here we will choose equation 2
    If Y = 5
    X + 3(5) = 19X = 19 - 15 X = 4
Answered by Chris C. Maths tutor

2874 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Make s the subject of the formula


What is the gradient of a line with the equation y=4x+5?


Suppose we have a circle with the equation x^2 +y^2 =25. What is the equation to the tangent to the circle at point (4,3)?


how would you solve the simultaneous equations 3x + 4y = 11, 5x - y = 3?


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