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Simplifying 0.78(c + 2) = 3.9 Reorder the terms: 0.78(2 + c) = 3.9 (2 * 0.78 + c * 0.78) = 3.9 (1.56 + 0.78c) = 3.9 Solving 1.56 + 0.78c = 3.9 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-1.56' to each side of the equation. 1.56 + -1.56 + 0.78c = 3.9 + -1.56 Combine like terms: 1.56 + -1.56 = 0.00 0.00 + 0.78c = 3.9 + -1.56 0.78c = 3.9 + -1.56 Combine like terms: 3.9 + -1.56 = 2.34 0.78c = 2.34 Divide each side by '0.78'. c = 3 Simplifying c = 3
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