Sunday, March 18, 2012

How do I solve the following equation : 4(2y+1)=2(12-y)I know the answer is y=2 but i do not know how to work it out

You have to solve the equation 4(2y+1) =
2(12-y).


First let's start with 4(2y+1) =
2(12-y)


open the
brackets


=> 4*2y + 4*1 = 2*12 -
2*y


=> 8y + 4 = 24 -
2y


now move the terms with y to one side, and the numeric
terms to the other side. Remember that when you move a term to the other side of the
equation, its sign changes


=> 8y + 2y = 24 -
4


=> 10y = 20


divide
both the sides by 10


=> y = 20/10 =
2.


That's how you get y = 2. Hope it's clear
now.

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