Solve the simultaneous equations for x and y: 2x - 3y + 4 = 0 , x - 2y + 1 = 0.

Simultaneous equations can be solved either by substitution or elimination. Solving this by elimination:2x - 3y + 4 = 0 (1)x - 2y + 1 = 0 (2)To eliminate x, we can multiply both sides of the second equation by 2:2x - 4y + 2 = 0 (3)By subtracting (1) from (3) we find that y = -2. Substituting this into (2) gives x = -1 + 2(-2) = -5.

BR
Answered by Benjamin R. Maths tutor

5676 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

A class of 10 students all complete a maths exam. Their marks are as follows: 67, 82, 48, 36, 55, 95, 19, 49, 62 and 73. Find the mean, median and range.


What is the value of 64^(2/3)?


What is (18)^1/2 -(8)^1/2 simplified?


Solve for x: 2x^2 + 2x -24 = 0


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences