Respuesta :

2 x - 5 y = 10

isolate  y for 2 x - 5y = 10

subtract 2x from both sides :

2 x - 5y - 2 x = 10 - 2 x

Refine =>  = - 5 y = 10 - 2 x

Divide both sides by -5 :

- 5y / 5 = 10 - 2x / -5

Refine:

y = -  -2x + 10 / 5

hope this helps!
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