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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