solve the simultaneous equations , 5a+2b=23 & 9a-2b=19, algebraically.

find sum of both equations: 14a=42, therefore a=3, substitute 'a' into an equation: (5x3)+2b=23, therefore 2b=8, therfore b=4

RP
Answered by Rohan P. Maths tutor

4235 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

What is a coordinate?


The first 4 terms of a different sequence are: 9, 13, 17, 21. Find an expression for the nth term of the sequence.


Evaluate 25^(3/2) giving your answer as an integer or simplified fraction (2 marks).


Solve the simultaneous equations: 3x-y=1, x^2+y^2=5


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences