We have been given the equations:
0.8 - 4x = -0.4y AND 6x + 0.4y = 4.2
We need to determine the system of equations with like terms aligned. Hence, x and y values should be at the same side of the = sign and the constant should be at the other side
⇒ System of equations with aligned terms is:
- 4x + 0.4y = -0.8 AND
6x + 0.4y = 4.2
This above system matches with the third option given in the question.