[tex]\text{Simplify the expression:}\\\\2 (-y-3z) -6(-5z-6y)\\\\\text{Use the distributive property:}\\\\2 (-y-3z) -6(-5z-6y)\\\\-2y-6z+30z+36y\\\\\text{Combine like terms:}\\\\\boxed{34y+24z}[/tex]
