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Simplifying 81 + -1s = 2s Solving 81 + -1s = 2s Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-2s' to each side of the equation. 81 + -1s + -2s = 2s + -2s Combine like terms: -1s + -2s = -3s 81 + -3s = 2s + -2s Combine like terms: 2s + -2s = 0 81 + -3s = 0 Add '-81' to each side of the equation. 81 + -81 + -3s = 0 + -81 Combine like terms: 81 + -81 = 0 0 + -3s = 0 + -81 -3s = 0 + -81 Combine like terms: 0 + -81 = -81 -3s = -81 Divide each side by '-3'. s = 27 Simplifying s = 27
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