$$\frac { y + 1 } { 3 } + \frac { y + 1 } { 2 } = 2 - \frac { y + 3 } { 2 }$$
$y=-\frac{1}{4}=-0.25$
$$2\left(y+1\right)+3\left(y+1\right)=12-3\left(y+3\right)$$
$$2y+2+3\left(y+1\right)=12-3\left(y+3\right)$$
$$2y+2+3y+3=12-3\left(y+3\right)$$
$$5y+2+3=12-3\left(y+3\right)$$
$$5y+5=12-3\left(y+3\right)$$
$$5y+5=12-3y-9$$
$$5y+5=3-3y$$
$$5y+5+3y=3$$
$$8y+5=3$$
$$8y=3-5$$
$$8y=-2$$
$$y=\frac{-2}{8}$$
$$y=-\frac{1}{4}$$
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