Respuesta :

1. 4.5r = 3.2 + 4.5r, 3z + 2.5 = 3.2 + 3z
2. 1.1 + 3/4x + 2 = 3.1 + 3/4 x , 2x +4 = 3x + 1/2
3. 1/2 y + 3.2 y = 20, 15/ 2 + 2z -1/4 = 4z + 29/4 -2z
I hope this is correct!