-3\left(-2r-9\right)
You asked:
Evaluate the expression: \(-\left( 3 \cdot \left(-\left( 2 r \right) - 9\right) \right)\)
MathBot Answer:
Evaluated
\(\displaystyle -\left( 3 \cdot \left(-\left( 2 r \right) - 9\right) \right) = 6 r + 27 \)
Expanded
\[-\left( 3 \cdot \left(-\left( 2 r \right) - 9\right) \right) = 6 r + 27\]