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Simplifying 3y + 42 = y + 30 Reorder the terms: 42 + 3y = y + 30 Reorder the terms: 42 + 3y = 30 + y Solving 42 + 3y = 30 + 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. 42 + 3y + -1y = 30 + y + -1y Combine like terms: 3y + -1y = 2y 42 + 2y = 30 + y + -1y Combine like terms: y + -1y = 0 42 + 2y = 30 + 0 42 + 2y = 30 Add '-42' to each side of the equation. 42 + -42 + 2y = 30 + -42 Combine like terms: 42 + -42 = 0 0 + 2y = 30 + -42 2y = 30 + -42 Combine like terms: 30 + -42 = -12 2y = -12 Divide each side by '2'. y = -6 Simplifying y = -6
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