## Elementary Algebra

$-7x-18$
We start with the given expression: $-3(x-2)-4(x+6)$ We use the distributive property to expand the expression: $-3x+6-4x-24$ We use the commutative property to group like terms: $-3x-4x+6-24$ We combine the like terms using subtraction: $(-3-4)x+6-24=-7x-18$