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Simplifying (10 + -1t)(10 + r) = 0 Multiply (10 + -1t) * (10 + r) (10(10 + r) + -1t * (10 + r)) = 0 ((10 * 10 + r * 10) + -1t * (10 + r)) = 0 ((100 + 10r) + -1t * (10 + r)) = 0 (100 + 10r + (10 * -1t + r * -1t)) = 0 Reorder the terms: (100 + 10r + (-1rt + -10t)) = 0 (100 + 10r + (-1rt + -10t)) = 0 (100 + 10r + -1rt + -10t) = 0 Solving 100 + 10r + -1rt + -10t = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-100' to each side of the equation. 100 + 10r + -1rt + -100 + -10t = 0 + -100 Reorder the terms: 100 + -100 + 10r + -1rt + -10t = 0 + -100 Combine like terms: 100 + -100 = 0 0 + 10r + -1rt + -10t = 0 + -100 10r + -1rt + -10t = 0 + -100 Combine like terms: 0 + -100 = -100 10r + -1rt + -10t = -100 Add '10t' to each side of the equation. 10r + -1rt + -10t + 10t = -100 + 10t Combine like terms: -10t + 10t = 0 10r + -1rt + 0 = -100 + 10t 10r + -1rt = -100 + 10t Reorder the terms: 100 + 10r + -1rt + -10t = -100 + 10t + 100 + -10t Reorder the terms: 100 + 10r + -1rt + -10t = -100 + 100 + 10t + -10t Combine like terms: -100 + 100 = 0 100 + 10r + -1rt + -10t = 0 + 10t + -10t 100 + 10r + -1rt + -10t = 10t + -10t Combine like terms: 10t + -10t = 0 100 + 10r + -1rt + -10t = 0 The solution to this equation could not be determined.
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