Answer
$13x-19y$
Work Step by Step
Distribute 5 to obtain:
$=15x-20y-(2x-y)$
Subtract each term of $(2x-y)$ to obtain:
$=15x-20y-2x-(-y)
\\=15x-20y-2x+y$
Combine like terms to obtain:
$=(15x-2x) + (-20y+y)
\\=(15-2)x + (-20+1)y
\\=13x+(-19)y
\\=13x-19y$