# factorising help please? 12x + 8y = 4

factorising help please? 12x + 8y = 4

factorising help please? 12x + 8y = 4 can someone please explain factorisng this in simple and easy steps so i can do all the others.

Hi are you there?
tonyshifly
19 June 2012
For this question. 12 could be factored as 43, 8 could be factored as 24.
tonyshifly
19 June 2012
therefore, both side have the common factor 4.
tonyshifly
19 June 2012
in this case, we could divide both sides by common factor 4.
tonyshifly
19 June 2012
yes hello
epicj
19 June 2012
Identify a common factor- in this case a number that goes into 12, 8 and 4. This number is 4, as previously stated. Dividing by 4 leaves:
bella_s_s
02 July 2012
3x + 2y = 1
bella_s_s
02 July 2012
Or, 0 + 2y = 1, making y = 0.5
bella_s_s
02 July 2012
If we make x = 0, the sum now reads (3*0) + 2y = 1..
bella_s_s
02 July 2012
That's your answer for y. To find x, put y back into the sum, ie
bella_s_s
02 July 2012
Make y = 0.. Making (3x) + (20) =1
bella_s_s
02 July 2012
or 3X + 0 = 1. X= 1/3
bella_s_s
02 July 2012
To check,
bella_s_s
02 July 2012
Usually you look for a common factor, a number present in each of 12,8 & 4.
Neil G.
02 July 2012
The common factor here is 4 so the equation becomes 4(3x+2y)=4.
Neil G.
02 July 2012
Next you divide by 4 on both sides to be fair to both sides. The equation now becomes 3x+2y=1.
Neil G.
02 July 2012
That's all you can do with that unless you have some other conditions. For example; if you know x you can find y. But that's simultaneous equations and not simply factorising.
Neil G.
02 July 2012