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Simplifying (3x + 13) = cos(4x) Reorder the terms: (13 + 3x) = cos(4x) Remove parenthesis around (13 + 3x) 13 + 3x = cos(4x) Remove parenthesis around (4x) 13 + 3x = cos * 4x Reorder the terms for easier multiplication: 13 + 3x = 4cos * x Multiply cos * x 13 + 3x = 4cosx Solving 13 + 3x = 4cosx Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4cosx' to each side of the equation. 13 + -4cosx + 3x = 4cosx + -4cosx Combine like terms: 4cosx + -4cosx = 0 13 + -4cosx + 3x = 0 Add '-13' to each side of the equation. 13 + -4cosx + -13 + 3x = 0 + -13 Reorder the terms: 13 + -13 + -4cosx + 3x = 0 + -13 Combine like terms: 13 + -13 = 0 0 + -4cosx + 3x = 0 + -13 -4cosx + 3x = 0 + -13 Combine like terms: 0 + -13 = -13 -4cosx + 3x = -13 Reorder the terms: 13 + -4cosx + 3x = -13 + 13 Combine like terms: -13 + 13 = 0 13 + -4cosx + 3x = 0 The solution to this equation could not be determined.
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