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