Respuesta :

Answer:

Step-by-step explanation:

3.

2x=-10y+6

or x=-5y+3

or x+5y+3

also x=5y+3

it  has infinitely many solutions.

c

4.y=5x+7

y=5x+8

or 5x+7=5x+8

or 7=8

which is impossible.

it has no solution.

c