To solve the system of equations:
- \( 4x + y = -5 \)
- \( 20x + 5y = 10 \)
We can start by simplifying the second equation. Notice that the second equation can be simplified by dividing every term by 5:
\[ 20x + 5y = 10 \implies 4x + y = 2 \]
Now we have the simplified system:
- \( 4x + y = -5 \)
- \( 4x + y = 2 \)
If we subtract the first equation from the second:
\[ (4x + y) - (4x + y) = 2 - (-5) \]
This results in:
\[ 0 = 7 \]
This is a contradiction, which means that the system of equations has no solution. The two lines represented by these equations are parallel and do not intersect.