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Simplifying -140 = 4x + -4(5x + -13) Reorder the terms: -140 = 4x + -4(-13 + 5x) -140 = 4x + (-13 * -4 + 5x * -4) -140 = 4x + (52 + -20x) Reorder the terms: -140 = 52 + 4x + -20x Combine like terms: 4x + -20x = -16x -140 = 52 + -16x Solving -140 = 52 + -16x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '16x' to each side of the equation. -140 + 16x = 52 + -16x + 16x Combine like terms: -16x + 16x = 0 -140 + 16x = 52 + 0 -140 + 16x = 52 Add '140' to each side of the equation. -140 + 140 + 16x = 52 + 140 Combine like terms: -140 + 140 = 0 0 + 16x = 52 + 140 16x = 52 + 140 Combine like terms: 52 + 140 = 192 16x = 192 Divide each side by '16'. x = 12 Simplifying x = 12
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