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Simplifying 2x2 + -4c + -18 = 0 Reorder the terms: -18 + -4c + 2x2 = 0 Solving -18 + -4c + 2x2 = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '18' to each side of the equation. -18 + -4c + 18 + 2x2 = 0 + 18 Reorder the terms: -18 + 18 + -4c + 2x2 = 0 + 18 Combine like terms: -18 + 18 = 0 0 + -4c + 2x2 = 0 + 18 -4c + 2x2 = 0 + 18 Combine like terms: 0 + 18 = 18 -4c + 2x2 = 18 Add '-2x2' to each side of the equation. -4c + 2x2 + -2x2 = 18 + -2x2 Combine like terms: 2x2 + -2x2 = 0 -4c + 0 = 18 + -2x2 -4c = 18 + -2x2 Divide each side by '-4'. c = -4.5 + 0.5x2 Simplifying c = -4.5 + 0.5x2
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