Simplify \(15+3\) to \(18\).
Simplify \(-4-3\) to \(-7\).
Simplify \(-48+18\) to \(-30\).
Move the negative sign to the left.
Invert and multiply.
Use this rule: \(a \times \frac{b}{c}=\frac{ab}{c}\).
Remove parentheses.
Remove parentheses.
[18+(7*6])/[-30
