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3y+9=15−93y+9=15-9

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Full solution

Q. 3y+9=15−93y+9=15-9
  1. Simplify Equation: We start by simplifying both sides of the equation.\newlineOn the right side, we subtract 99 from 1515.\newline15−9=615 - 9 = 6\newlineSo the equation becomes:\newline3y+9=63y + 9 = 6
  2. Isolate y Term: Next, we need to isolate the term with yy on one side of the equation. We do this by subtracting 99 from both sides of the equation. 3y+9−9=6−93y + 9 - 9 = 6 - 9 This simplifies to: 3y=−33y = -3
  3. Divide to Solve for y: Now, we divide both sides of the equation by 33 to solve for yy.\newline3y3=−33\frac{3y}{3} = \frac{-3}{3}\newlineThis gives us:\newliney=−1y = -1

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