Evaluate: 2x-4(x+2y+5)+6y

Expression: $2x-4\left( x+2y+5 \right)+6y$

Distribute $-4$ through the parentheses

$2x-4x-8y-20+6y$

Collect like terms

$-2x-8y-20+6y$

Collect like terms

$-2x-2y-20$