Respuesta :

Tareki
First equation 
L.H.S = 4x -0.25y 
so it doesn't equal the R.H.S 

2nd equation 
R.H.S = 15q + 3qr 
so it doesn't equal the L.H.S 

3rd equation 
R.H.S = -30m -60n 
so R.H.S doesn't equal L.H.S 

4th equation 
L.H.S = -16a +4 
so L.H.S equal R.H.S 

The answer is D