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Simplifying 42 + y = 12 + 2y Solving 42 + y = 12 + 2y Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-2y' to each side of the equation. 42 + y + -2y = 12 + 2y + -2y Combine like terms: y + -2y = -1y 42 + -1y = 12 + 2y + -2y Combine like terms: 2y + -2y = 0 42 + -1y = 12 + 0 42 + -1y = 12 Add '-42' to each side of the equation. 42 + -42 + -1y = 12 + -42 Combine like terms: 42 + -42 = 0 0 + -1y = 12 + -42 -1y = 12 + -42 Combine like terms: 12 + -42 = -30 -1y = -30 Divide each side by '-1'. y = 30 Simplifying y = 30
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