1,3 (x+20y)-40 (0,9y-x)+63y

Question

1,3 (x+20y)-40 (0,9y-x)+63y

Answer 1

   1,3*(x+20y) - 40*(0,9y-x) + 63y = 1,3x + 26y - 36y + 40x + 63y =
= 53y + 41,3x