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