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Simplifying 12 = 5cos(2x) + 7 Remove parenthesis around (2x) 12 = 5cos * 2x + 7 Reorder the terms for easier multiplication: 12 = 5 * 2cos * x + 7 Multiply 5 * 2 12 = 10cos * x + 7 Multiply cos * x 12 = 10cosx + 7 Reorder the terms: 12 = 7 + 10cosx Solving 12 = 7 + 10cosx Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-10cosx' to each side of the equation. 12 + -10cosx = 7 + 10cosx + -10cosx Combine like terms: 10cosx + -10cosx = 0 12 + -10cosx = 7 + 0 12 + -10cosx = 7 Add '-12' to each side of the equation. 12 + -12 + -10cosx = 7 + -12 Combine like terms: 12 + -12 = 0 0 + -10cosx = 7 + -12 -10cosx = 7 + -12 Combine like terms: 7 + -12 = -5 -10cosx = -5 Divide each side by '-10osx'. c = 0.5o-1s-1x-1 Simplifying c = 0.5o-1s-1x-1
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