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Simplifying 3 = 7cos(2x) Remove parenthesis around (2x) 3 = 7cos * 2x Reorder the terms for easier multiplication: 3 = 7 * 2cos * x Multiply 7 * 2 3 = 14cos * x Multiply cos * x 3 = 14cosx Solving 3 = 14cosx Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-14cosx' to each side of the equation. 3 + -14cosx = 14cosx + -14cosx Combine like terms: 14cosx + -14cosx = 0 3 + -14cosx = 0 Add '-3' to each side of the equation. 3 + -3 + -14cosx = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -14cosx = 0 + -3 -14cosx = 0 + -3 Combine like terms: 0 + -3 = -3 -14cosx = -3 Divide each side by '-14osx'. c = 0.2142857143o-1s-1x-1 Simplifying c = 0.2142857143o-1s-1x-1
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