Answer
$2x+7$
Work Step by Step
We start with the given expression: $5(x-4)-3(x-9)$
We use the distributive property to expand the expression: $5x-20-3x+27$
We use the commutative property to group like terms: $5x-3x+27-20$
We combine the like terms using subtraction: $(5-3)x+27-20=2x+7$