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Simplifying 2x + -5(-21) = -5 Multiply -5 * -21 2x + 105 = -5 Reorder the terms: 105 + 2x = -5 Solving 105 + 2x = -5 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-105' to each side of the equation. 105 + -105 + 2x = -5 + -105 Combine like terms: 105 + -105 = 0 0 + 2x = -5 + -105 2x = -5 + -105 Combine like terms: -5 + -105 = -110 2x = -110 Divide each side by '2'. x = -55 Simplifying x = -55
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