Question

помогите 4(3х+у)-1=у-2х     2(4х-у)+19=-х

Answer 1

12x+4y-2=y-2x
12x+2x =y-4y
14x=-3y

8x-2y+19=-x
8x+x=-19+2y
9x-2y=-19

Answer 2

12x+4y-2=y-2x
12x+2x =y-4y
14x=-3y

8x-2y+19=-x
8x+x=-19+2y
9x-2y=-19