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Simplifying 20.5 = 2pir Solving 20.5 = 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. 20.5 + -2ipr = 2ipr + -2ipr Combine like terms: 2ipr + -2ipr = 0 20.5 + -2ipr = 0 Add '-20.5' to each side of the equation. 20.5 + -20.5 + -2ipr = 0 + -20.5 Combine like terms: 20.5 + -20.5 = 0.0 0.0 + -2ipr = 0 + -20.5 -2ipr = 0 + -20.5 Combine like terms: 0 + -20.5 = -20.5 -2ipr = -20.5 Divide each side by '-2pr'. i = 10.25p-1r-1 Simplifying i = 10.25p-1r-1
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