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Simplifying 81 + -6x = 7x Solving 81 + -6x = 7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7x' to each side of the equation. 81 + -6x + -7x = 7x + -7x Combine like terms: -6x + -7x = -13x 81 + -13x = 7x + -7x Combine like terms: 7x + -7x = 0 81 + -13x = 0 Add '-81' to each side of the equation. 81 + -81 + -13x = 0 + -81 Combine like terms: 81 + -81 = 0 0 + -13x = 0 + -81 -13x = 0 + -81 Combine like terms: 0 + -81 = -81 -13x = -81 Divide each side by '-13'. x = 6.230769231 Simplifying x = 6.230769231
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