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Simplifying 10r * 2 + 10r * 2 + 2r * 2 + 8r * 2 = 0 Reorder the terms for easier multiplication: 10 * 2r + 10r * 2 + 2r * 2 + 8r * 2 = 0 Multiply 10 * 2 20r + 10r * 2 + 2r * 2 + 8r * 2 = 0 Reorder the terms for easier multiplication: 20r + 10 * 2r + 2r * 2 + 8r * 2 = 0 Multiply 10 * 2 20r + 20r + 2r * 2 + 8r * 2 = 0 Reorder the terms for easier multiplication: 20r + 20r + 2 * 2r + 8r * 2 = 0 Multiply 2 * 2 20r + 20r + 4r + 8r * 2 = 0 Reorder the terms for easier multiplication: 20r + 20r + 4r + 8 * 2r = 0 Multiply 8 * 2 20r + 20r + 4r + 16r = 0 Combine like terms: 20r + 20r = 40r 40r + 4r + 16r = 0 Combine like terms: 40r + 4r = 44r 44r + 16r = 0 Combine like terms: 44r + 16r = 60r 60r = 0 Solving 60r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Divide each side by '60'. r = 0.0 Simplifying r = 0.0
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