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Simplifying 81 + -7t = 81 Add '-81' to each side of the equation. 81 + -81 + -7t = 81 + -81 Combine like terms: 81 + -81 = 0 0 + -7t = 81 + -81 -7t = 81 + -81 Combine like terms: 81 + -81 = 0 -7t = 0 Solving -7t = 0 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Divide each side by '-7'. t = 0 Simplifying t = 0
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