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Simplifying x2 + 9t + 20 = 0 Reorder the terms: 20 + 9t + x2 = 0 Solving 20 + 9t + x2 = 0 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + 9t + -20 + x2 = 0 + -20 Reorder the terms: 20 + -20 + 9t + x2 = 0 + -20 Combine like terms: 20 + -20 = 0 0 + 9t + x2 = 0 + -20 9t + x2 = 0 + -20 Combine like terms: 0 + -20 = -20 9t + x2 = -20 Add '-1x2' to each side of the equation. 9t + x2 + -1x2 = -20 + -1x2 Combine like terms: x2 + -1x2 = 0 9t + 0 = -20 + -1x2 9t = -20 + -1x2 Divide each side by '9'. t = -2.222222222 + -0.1111111111x2 Simplifying t = -2.222222222 + -0.1111111111x2
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