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Simplifying -9 = -4y + -13 Reorder the terms: -9 = -13 + -4y Solving -9 = -13 + -4y Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '4y' to each side of the equation. -9 + 4y = -13 + -4y + 4y Combine like terms: -4y + 4y = 0 -9 + 4y = -13 + 0 -9 + 4y = -13 Add '9' to each side of the equation. -9 + 9 + 4y = -13 + 9 Combine like terms: -9 + 9 = 0 0 + 4y = -13 + 9 4y = -13 + 9 Combine like terms: -13 + 9 = -4 4y = -4 Divide each side by '4'. y = -1 Simplifying y = -1
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