Solve the simultaneous equation: x+2y=8 and 2x+y=10 - using a calculator

Make the x's the same in order to remove the x's from the eqn Multiply eqn (1) by 2 and keep eqn (2) the same to gain 2x+4y=16 and 2x+y=10To get rid of the x's, subtract: eqn (1) - eqn (2)4-1y = 16-10 which equates to 3y = 6 To find y by itself, divide 6 by 3 = 2 To find x, substitute into either eqn (1) or (2) - e.g. eqn (1): x + 2(2) = 8 therefore x=4 More instructions will be provided on the whiteboard

RW
Answered by Robyn W. Maths tutor

3169 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

How do surds relate to powers and roots?


write (3.2 x 10^4) - (5 x 10^3) in standard form


Factorise x^2+6x+8


How can you factorise quadratics with a an x^2 coefficient higher than one?


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