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Simplifying (3x + 9) = cos(x + 5) Reorder the terms: (9 + 3x) = cos(x + 5) Remove parenthesis around (9 + 3x) 9 + 3x = cos(x + 5) Reorder the terms: 9 + 3x = cos(5 + x) 9 + 3x = (5 * cos + x * cos) 9 + 3x = (5cos + cosx) Solving 9 + 3x = 5cos + cosx Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1cosx' to each side of the equation. 9 + -1cosx + 3x = 5cos + cosx + -1cosx Combine like terms: cosx + -1cosx = 0 9 + -1cosx + 3x = 5cos + 0 9 + -1cosx + 3x = 5cos Add '-9' to each side of the equation. 9 + -1cosx + -9 + 3x = -9 + 5cos Reorder the terms: 9 + -9 + -1cosx + 3x = -9 + 5cos Combine like terms: 9 + -9 = 0 0 + -1cosx + 3x = -9 + 5cos -1cosx + 3x = -9 + 5cos Reorder the terms: 9 + -5cos + -1cosx + 3x = -9 + 5cos + 9 + -5cos Reorder the terms: 9 + -5cos + -1cosx + 3x = -9 + 9 + 5cos + -5cos Combine like terms: -9 + 9 = 0 9 + -5cos + -1cosx + 3x = 0 + 5cos + -5cos 9 + -5cos + -1cosx + 3x = 5cos + -5cos Combine like terms: 5cos + -5cos = 0 9 + -5cos + -1cosx + 3x = 0 The solution to this equation could not be determined.
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