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Simplifying 2 + 3cos(5y) = x Remove parenthesis around (5y) 2 + 3cos * 5y = x Reorder the terms for easier multiplication: 2 + 3 * 5cos * y = x Multiply 3 * 5 2 + 15cos * y = x Multiply cos * y 2 + 15cosy = x Solving 2 + 15cosy = x Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 15cosy = -2 + x Combine like terms: 2 + -2 = 0 0 + 15cosy = -2 + x 15cosy = -2 + x Divide each side by '15osy'. c = -0.1333333333o-1s-1y-1 + 0.06666666667o-1s-1xy-1 Simplifying c = -0.1333333333o-1s-1y-1 + 0.06666666667o-1s-1xy-1 Reorder the terms: c = 0.06666666667o-1s-1xy-1 + -0.1333333333o-1s-1y-1
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