3.1a+2.25b-a-1,4b+6,3a = 10.4a+0.85b
0.9x-1.2y-0.99x-2.7y= -0.09x-3.9y
3,1а+2.25b-a- 1.4b+ 6,3a
8,4а-0.85b
3.1a+2.25b-a-1,4b+6,3a = 10.4a+0.85b
0.9x-1.2y-0.99x-2.7y= -0.09x-3.9y
3,1а+2.25b-a- 1.4b+ 6,3a
8,4а-0.85b