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Simplifying 19.5 = 2(pi) * r Multiply ip * r 19.5 = 2ipr Solving 19.5 = 2ipr Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Add '-2ipr' to each side of the equation. 19.5 + -2ipr = 2ipr + -2ipr Combine like terms: 2ipr + -2ipr = 0 19.5 + -2ipr = 0 Add '-19.5' to each side of the equation. 19.5 + -19.5 + -2ipr = 0 + -19.5 Combine like terms: 19.5 + -19.5 = 0.0 0.0 + -2ipr = 0 + -19.5 -2ipr = 0 + -19.5 Combine like terms: 0 + -19.5 = -19.5 -2ipr = -19.5 Divide each side by '-2pr'. i = 9.75p-1r-1 Simplifying i = 9.75p-1r-1
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