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Simplifying 9(7t + 1) + -11 = t + -1(t + 1) Reorder the terms: 9(1 + 7t) + -11 = t + -1(t + 1) (1 * 9 + 7t * 9) + -11 = t + -1(t + 1) (9 + 63t) + -11 = t + -1(t + 1) Reorder the terms: 9 + -11 + 63t = t + -1(t + 1) Combine like terms: 9 + -11 = -2 -2 + 63t = t + -1(t + 1) Reorder the terms: -2 + 63t = t + -1(1 + t) -2 + 63t = t + (1 * -1 + t * -1) -2 + 63t = t + (-1 + -1t) Reorder the terms: -2 + 63t = -1 + t + -1t Combine like terms: t + -1t = 0 -2 + 63t = -1 + 0 -2 + 63t = -1 Solving -2 + 63t = -1 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + 63t = -1 + 2 Combine like terms: -2 + 2 = 0 0 + 63t = -1 + 2 63t = -1 + 2 Combine like terms: -1 + 2 = 1 63t = 1 Divide each side by '63'. t = 0.01587301587 Simplifying t = 0.01587301587
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