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Simplifying 9 = 2(pi) * r Multiply ip * r 9 = 2ipr Solving 9 = 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. 9 + -2ipr = 2ipr + -2ipr Combine like terms: 2ipr + -2ipr = 0 9 + -2ipr = 0 Add '-9' to each side of the equation. 9 + -9 + -2ipr = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -2ipr = 0 + -9 -2ipr = 0 + -9 Combine like terms: 0 + -9 = -9 -2ipr = -9 Divide each side by '-2pr'. i = 4.5p-1r-1 Simplifying i = 4.5p-1r-1
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