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Simplifying 20x + -7 = 18x + 7 Reorder the terms: -7 + 20x = 18x + 7 Reorder the terms: -7 + 20x = 7 + 18x Solving -7 + 20x = 7 + 18x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-18x' to each side of the equation. -7 + 20x + -18x = 7 + 18x + -18x Combine like terms: 20x + -18x = 2x -7 + 2x = 7 + 18x + -18x Combine like terms: 18x + -18x = 0 -7 + 2x = 7 + 0 -7 + 2x = 7 Add '7' to each side of the equation. -7 + 7 + 2x = 7 + 7 Combine like terms: -7 + 7 = 0 0 + 2x = 7 + 7 2x = 7 + 7 Combine like terms: 7 + 7 = 14 2x = 14 Divide each side by '2'. x = 7 Simplifying x = 7
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