# How do you simplify 1.5sqrt11-12sqrt11-2sqrt11?

$\text{ } 1.5 \sqrt{11} - 12 \sqrt{11} - 2 \sqrt{11} = - 12.5 \sqrt{11}$
This is no different to: $1.5 x - 12 x - 2 x = - 12.5 x$
So $\text{ } 1.5 \sqrt{11} - 12 \sqrt{11} - 2 \sqrt{11} = - 12.5 \sqrt{11}$