[tex]\displaystyle 1)-(y-16)+5(2y-3)=-y+16+8y-12=7y+4\\\\2)5(a-2b)+3(-a+3b)=5a-10b-3a+9b=2a-b\\\\3)4(m+5n)-5(m-3n)=4m+20n-5m+15n=-m+35n[/tex]