How can I solve simultaneous equations?

There are many options, but substitution is the one we will go through for this example first. Lets say you have 3x+4y = 10 and x+2y = 6In this case substitution would be easiest because you have a singular 'x' in one of the equations. Make x the subject of the second equations so that x = 6 - 2y, and then substitute this into the first equation 3(6 - 2y) + 4y = 10 to give you 18 - 2y = 10. From here simplify to find y: 8 = 2y therefore y = 4. then find x; x = 6 - 2y. x = 6 - 8 therefore x = -2.

Answered by Tanika D. Maths tutor

2141 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Make x the subject of the following formula: x/2 + 3 = y - 2


Work out the value of 4a + 2b when a = 4 and b = 3.


When do two simultaneous equations have a solution?


Find the inverse of the following function: g(x) = 4/(3-x)


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 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences