Answer
$y=7$
Work Step by Step
$\begin{align*}
y-4+4&=3+4 &\text{Add 4 to each side of the equation.}\\
y&=7 &\text{Simplify}.
\end{align*}$
Check if the solution is correct by substituting $7$ to the variable in the original equation:
$\begin{align*}
y-4&=3\\
7-4&\stackrel{?}{=}3\\
3&\stackrel{\checkmark}{=}3
\end{align*}$
Thus, the solution is $y=7$.
