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Simplifying tan(5x) + -2tan(3x) + tan(x) = 0 Remove parenthesis around (5x) ant * 5x + -2tan(3x) + tan(x) = 0 Reorder the terms for easier multiplication: 5ant * x + -2tan(3x) + tan(x) = 0 Multiply ant * x 5antx + -2tan(3x) + tan(x) = 0 Remove parenthesis around (3x) 5antx + -2ant * 3x + tan(x) = 0 Reorder the terms for easier multiplication: 5antx + -2 * 3ant * x + tan(x) = 0 Multiply -2 * 3 5antx + -6ant * x + tan(x) = 0 Multiply ant * x 5antx + -6antx + tan(x) = 0 Multiply ant * x 5antx + -6antx + antx = 0 Combine like terms: 5antx + -6antx = -1antx -1antx + antx = 0 Combine like terms: -1antx + antx = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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