Equations with parenthesis

1. Solve for $t$.
Give an exact answer.

$3 t-18=4\left(-3-\frac{3}{4} t\right)$

2.Solve for $b$.
Give an exact answer.

$0.75(8b+4)−1=4b+14$

3. Solve for $n$.
Give an exact answer.

$4 n+2=6\left(\frac{1}{3} n-\frac{2}{3}\right)$

4. Solve for $g$.
Give an exact answer.

$12 g=12\left(\frac{2}{3} g-1\right)+11$