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Simplifying 2X + -21 = 39 + 5X Reorder the terms: -21 + 2X = 39 + 5X Solving -21 + 2X = 39 + 5X Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-5X' to each side of the equation. -21 + 2X + -5X = 39 + 5X + -5X Combine like terms: 2X + -5X = -3X -21 + -3X = 39 + 5X + -5X Combine like terms: 5X + -5X = 0 -21 + -3X = 39 + 0 -21 + -3X = 39 Add '21' to each side of the equation. -21 + 21 + -3X = 39 + 21 Combine like terms: -21 + 21 = 0 0 + -3X = 39 + 21 -3X = 39 + 21 Combine like terms: 39 + 21 = 60 -3X = 60 Divide each side by '-3'. X = -20 Simplifying X = -20
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