how do i solve 3 (2y-4)=8y+9-9y

• : 3(2y - 4) = 8y + 9 - 9y
  
  Distribute 3:
  6y - 12 = 8y + 9 - 9y
  
  Combine like terms:
  6y - 12 = -y + 9
  
  Add y to both sides:
  7y - 12 = 9 
  
  Add 12 to both sides:
  7y = 21
  
  Divide both sides by 3:
  y = 3
• AthenaSinclair: The first step for solving this equation is to distribute 3 through the parenthesis.
  6y - 12 = 8y + 9 - 9y
  Collect the like terms with y.
  6y - 12 = -y + 9
  Move the variable to the left side and then change its sign.
  6y + y - 12 = 9
  Now move the constant to the right side and change its sign.
  6y + y = 9 + 12
  Add the terms on the left side of the equation.
  7y = 9 + 12
  Add the numbers on the right side.
  7y = 21
  Lastly,, divide both sides of the equation by 7 to find your final answer.
  y = 3
  This means that y = 3 is the correct answer to your question.
  Let me know if you have any further questions.
  :)