Solving simultaneous equations - GCSE Maths Revision

[wtf]

Instructions; (If youre not a visual learner)
Pretend theres a 1 before the letters without a number so x would become 1x
Subtract the simultaneous equations
3x + (1)y = 16
(1)x + (1)y = 10

2x = 6
Divide the number of x by 2, x = 3 as its two times x, and youre only trying to find x.
therefore y = 7 as x + y = 10 and its basic number bonds

your answer would be x = 3 and y= 7

to prove this, just go through the question again but with your answers
3 x 3 = 9 + 7 = 16

3 + 7 = 10

Here's the **basic formula**
brackets reference a random number unless if theres a number already in them and an asterisk represents an answer
()x + (1)y = *
(1)x + (1)y = *

()* = ()
() divided by () = * x = * and therefore y = *


Note: This is a formula, not an answer for anything.

[cxo]

how do you know which numbers to multiply the equations by?

[ExtremeTG]

does this playlist 'GCSE Maths GCSE Revision Higher Tier Course' contain every single bit of thing I need to revise for my gcse maths test next week

[atidzhemehmed]

Hello there,
Thank you you so much for your videos! They are very helpful! Could you please explain me how do you decide to subtract or add equation? I keep watching the video and still don’t understand.

[mrs.potatohead]

I wish this video had practice questions at the end to reinforce the knowledge we learnt! :( But, anyways, Thanks for the video Mr Hegarty - it's really useful! :)

[nathanrayne]

Well, my mind is blown. had to learn all this in 3 weeks or so, don't think this is going to end well :s

[coxxxy]

thank you, ur videos are very very helpful but i didn`t understand the 3rd example. when u get time may u please do a video of only those type of questions explaining them a bit more in detail. u should be my maths teacher :)

[Duqhan]

Don't you X by 2 for the first question?

[mozelchowdhurry]

question can you sub into any question for e.g. if you have 4 equations which one do you sub int into

[parkjimin-cfkp]

thank you for the vedio it's very helpful

[supergaming]

thank you, ur videos are very very helpful but i didn`t understand the 3rd example. when u get time may u please do a video of only those type of questions explaining them a bit more in detail. u should be my maths teacher :) Hi. Thanks for the video. I would like to know if the exam paper will ask us to solve the equations in a particular method? (Subsitution,  graphically and so on...) Thanks

[default]

you need to explain why you're doing what you're doing more because you're explaining it how you understand it :/