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How do I simplify...

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y - 5 = 3(y + 4) - 1 - 2y
y + 4     (y + 4)      y + 4
 
y - 5 = 3y + 12 - 1 + 2y      multiplying both sides by (y + 4) eliminates that binomial
 y + 4          y + 4
 
y - 5 =   5y + 11
-5y   = -5y
-4y - 5 =  11
      + 5 = +5
-4y      = 16
 -4          -4
 
      y = -4