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Simplifying -2y + 12 = y + -9 Reorder the terms: 12 + -2y = y + -9 Reorder the terms: 12 + -2y = -9 + y Solving 12 + -2y = -9 + y Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1y' to each side of the equation. 12 + -2y + -1y = -9 + y + -1y Combine like terms: -2y + -1y = -3y 12 + -3y = -9 + y + -1y Combine like terms: y + -1y = 0 12 + -3y = -9 + 0 12 + -3y = -9 Add '-12' to each side of the equation. 12 + -12 + -3y = -9 + -12 Combine like terms: 12 + -12 = 0 0 + -3y = -9 + -12 -3y = -9 + -12 Combine like terms: -9 + -12 = -21 -3y = -21 Divide each side by '-3'. y = 7 Simplifying y = 7
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