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Simplifying x + 139 = 21x + 5 Reorder the terms: 139 + x = 21x + 5 Reorder the terms: 139 + x = 5 + 21x Solving 139 + x = 5 + 21x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-21x' to each side of the equation. 139 + x + -21x = 5 + 21x + -21x Combine like terms: x + -21x = -20x 139 + -20x = 5 + 21x + -21x Combine like terms: 21x + -21x = 0 139 + -20x = 5 + 0 139 + -20x = 5 Add '-139' to each side of the equation. 139 + -139 + -20x = 5 + -139 Combine like terms: 139 + -139 = 0 0 + -20x = 5 + -139 -20x = 5 + -139 Combine like terms: 5 + -139 = -134 -20x = -134 Divide each side by '-20'. x = 6.7 Simplifying x = 6.7
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