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Simplifying y2 + -42y + c = 0 Reorder the terms: c + -42y + y2 = 0 Solving c + -42y + y2 = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '42y' to each side of the equation. c + -42y + 42y + y2 = 0 + 42y Combine like terms: -42y + 42y = 0 c + 0 + y2 = 0 + 42y c + y2 = 0 + 42y Remove the zero: c + y2 = 42y Add '-1y2' to each side of the equation. c + y2 + -1y2 = 42y + -1y2 Combine like terms: y2 + -1y2 = 0 c + 0 = 42y + -1y2 c = 42y + -1y2 Simplifying c = 42y + -1y2
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