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Simplifying 3 + 7x = -81 Solving 3 + 7x = -81 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 7x = -81 + -3 Combine like terms: 3 + -3 = 0 0 + 7x = -81 + -3 7x = -81 + -3 Combine like terms: -81 + -3 = -84 7x = -84 Divide each side by '7'. x = -12 Simplifying x = -12
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