#### Answer

$y=-10$

#### Work Step by Step

$4(3y-5)=14y$ $\longrightarrow$distributive property
$12y-20=14y$ $\longrightarrow$ addition property
$12y-20-12y=14y-12y$ $\longrightarrow$simplify
$-20=2y$ $\longrightarrow$multiplication property
$-20\div2=2y\div2$ $\longrightarrow$simplify
$-10=y$