Factor out the common term \(3\).
\[\frac{3(a+1)}{2}=8\]
Multiply both sides by \(2\).
\[3(a+1)=8\times 2\]
Simplify \(8\times 2\) to \(16\).
\[3(a+1)=16\]
Divide both sides by \(3\).
\[a+1=\frac{16}{3}\]
Subtract \(1\) from both sides.
\[a=\frac{16}{3}-1\]
Simplify \(\frac{16}{3}-1\) to \(\frac{13}{3}\).
\[a=\frac{13}{3}\]
Decimal Form: 4.333333
a=13/3
