$$( 16 ) 5 ( x + 1 ) = 4 ( x + 3 )$$
$x=-\frac{17}{19}\approx -0.894736842$
$$80\left(x+1\right)=4\left(x+3\right)$$
$$80x+80=4\left(x+3\right)$$
$$80x+80=4x+12$$
$$80x+80-4x=12$$
$$76x+80=12$$
$$76x=12-80$$
$$76x=-68$$
$$x=\frac{-68}{76}$$
$$x=-\frac{17}{19}$$
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