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Simplifying 4c2 + 15r + 9 = 0 Reorder the terms: 9 + 4c2 + 15r = 0 Solving 9 + 4c2 + 15r = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + 4c2 + -9 + 15r = 0 + -9 Reorder the terms: 9 + -9 + 4c2 + 15r = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 4c2 + 15r = 0 + -9 4c2 + 15r = 0 + -9 Combine like terms: 0 + -9 = -9 4c2 + 15r = -9 Add '-15r' to each side of the equation. 4c2 + 15r + -15r = -9 + -15r Combine like terms: 15r + -15r = 0 4c2 + 0 = -9 + -15r 4c2 = -9 + -15r Divide each side by '4'. c2 = -2.25 + -3.75r Simplifying c2 = -2.25 + -3.75r Reorder the terms: 2.25 + c2 + 3.75r = -2.25 + -3.75r + 2.25 + 3.75r Reorder the terms: 2.25 + c2 + 3.75r = -2.25 + 2.25 + -3.75r + 3.75r Combine like terms: -2.25 + 2.25 = 0.00 2.25 + c2 + 3.75r = 0.00 + -3.75r + 3.75r 2.25 + c2 + 3.75r = -3.75r + 3.75r Combine like terms: -3.75r + 3.75r = 0.00 2.25 + c2 + 3.75r = 0.00 The solution to this equation could not be determined.
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