-4а+12а+13а-27а =-6a
4,2-4,8x-6,3-2,4x-17x+19y-15y+13x =-11.2x+4y-2.1
0,9n-0,8m-0,7m+3,5n-1,9n=-1.5m+2.5n
-4а+12а+13а-27а =-6a
4,2-4,8x-6,3-2,4x-17x+19y-15y+13x =-11.2x+4y-2.1
0,9n-0,8m-0,7m+3,5n-1,9n=-1.5m+2.5n