Answer
$y=1$
Work Step by Step
$7(3y-2)-7=0$ $\longrightarrow$distributive property
$21y-14-7=0$ $\longrightarrow$combine like terms
$21y-21=0$ $\longrightarrow$addition property
$21y-21+21=0+21$ $\longrightarrow$combine like terms
$21y=21$ $\longrightarrow$multiplication property
$21y\div21=21\div21$ $\longrightarrow$simplify
$y=1$
