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Simplifying 3cos(6x) + -3cos(4x) = 0 Remove parenthesis around (6x) 3cos * 6x + -3cos(4x) = 0 Reorder the terms for easier multiplication: 3 * 6cos * x + -3cos(4x) = 0 Multiply 3 * 6 18cos * x + -3cos(4x) = 0 Multiply cos * x 18cosx + -3cos(4x) = 0 Remove parenthesis around (4x) 18cosx + -3cos * 4x = 0 Reorder the terms for easier multiplication: 18cosx + -3 * 4cos * x = 0 Multiply -3 * 4 18cosx + -12cos * x = 0 Multiply cos * x 18cosx + -12cosx = 0 Combine like terms: 18cosx + -12cosx = 6cosx 6cosx = 0 Solving 6cosx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '6'. cosx = 0 Simplifying cosx = 0 The solution to this equation could not be determined.
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