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Simplifying 2Cos(7x) + -1 = 0 Remove parenthesis around (7x) 2osC * 7x + -1 = 0 Reorder the terms for easier multiplication: 2 * 7osC * x + -1 = 0 Multiply 2 * 7 14osC * x + -1 = 0 Multiply osC * x 14osxC + -1 = 0 Reorder the terms: -1 + 14osxC = 0 Solving -1 + 14osxC = 0 Solving for variable 'o'. Move all terms containing o to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + 14osxC = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 14osxC = 0 + 1 14osxC = 0 + 1 Combine like terms: 0 + 1 = 1 14osxC = 1 Divide each side by '14sxC'. o = 0.07142857143s-1x-1C-1 Simplifying o = 0.07142857143s-1x-1C-1
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