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Simplifying 7x + -4(20 + -1x) = 3 7x + (20 * -4 + -1x * -4) = 3 7x + (-80 + 4x) = 3 Reorder the terms: -80 + 7x + 4x = 3 Combine like terms: 7x + 4x = 11x -80 + 11x = 3 Solving -80 + 11x = 3 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '80' to each side of the equation. -80 + 80 + 11x = 3 + 80 Combine like terms: -80 + 80 = 0 0 + 11x = 3 + 80 11x = 3 + 80 Combine like terms: 3 + 80 = 83 11x = 83 Divide each side by '11'. x = 7.545454545 Simplifying x = 7.545454545
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