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Simplifying -7(x + -4) = 20 Reorder the terms: -7(-4 + x) = 20 (-4 * -7 + x * -7) = 20 (28 + -7x) = 20 Solving 28 + -7x = 20 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-28' to each side of the equation. 28 + -28 + -7x = 20 + -28 Combine like terms: 28 + -28 = 0 0 + -7x = 20 + -28 -7x = 20 + -28 Combine like terms: 20 + -28 = -8 -7x = -8 Divide each side by '-7'. x = 1.142857143 Simplifying x = 1.142857143
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