Answer:
-x -9y
Step-by-step explanation:
-(3x+y)+2(x-4y)
-3x -y +2x -2*4y
-x -y -8y
-x -9y
-(3x+y)+2(x-4y)
Pretend that there is a -1 in front of the first bracket.
-1(3x+y)+2(x-4y)
Multiply the first bracket by -1
Multiply the second bracket by 2
(3x)(-1)(y)(-1)=-3x-y
(x)(2)(-4y)(2)=2x-8y
-3x-y+2x-8y
-3x+2x-y-8y
-x-9y
Answer: -x-9y
