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Simplifying 21c + -18 = 36 Reorder the terms: -18 + 21c = 36 Solving -18 + 21c = 36 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 + 18 + 21c = 36 + 18 Combine like terms: -18 + 18 = 0 0 + 21c = 36 + 18 21c = 36 + 18 Combine like terms: 36 + 18 = 54 21c = 54 Divide each side by '21'. c = 2.571428571 Simplifying c = 2.571428571
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