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Simplifying 3x + -20 = 7x + 8 Reorder the terms: -20 + 3x = 7x + 8 Reorder the terms: -20 + 3x = 8 + 7x Solving -20 + 3x = 8 + 7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7x' to each side of the equation. -20 + 3x + -7x = 8 + 7x + -7x Combine like terms: 3x + -7x = -4x -20 + -4x = 8 + 7x + -7x Combine like terms: 7x + -7x = 0 -20 + -4x = 8 + 0 -20 + -4x = 8 Add '20' to each side of the equation. -20 + 20 + -4x = 8 + 20 Combine like terms: -20 + 20 = 0 0 + -4x = 8 + 20 -4x = 8 + 20 Combine like terms: 8 + 20 = 28 -4x = 28 Divide each side by '-4'. x = -7 Simplifying x = -7
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