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Simplifying 7x + -81 = -9x + 143 Reorder the terms: -81 + 7x = -9x + 143 Reorder the terms: -81 + 7x = 143 + -9x Solving -81 + 7x = 143 + -9x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9x' to each side of the equation. -81 + 7x + 9x = 143 + -9x + 9x Combine like terms: 7x + 9x = 16x -81 + 16x = 143 + -9x + 9x Combine like terms: -9x + 9x = 0 -81 + 16x = 143 + 0 -81 + 16x = 143 Add '81' to each side of the equation. -81 + 81 + 16x = 143 + 81 Combine like terms: -81 + 81 = 0 0 + 16x = 143 + 81 16x = 143 + 81 Combine like terms: 143 + 81 = 224 16x = 224 Divide each side by '16'. x = 14 Simplifying x = 14
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