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Simplifying 21 = -7 + -5x Solving 21 = -7 + -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 + 5x = -7 + -5x + 5x Combine like terms: -5x + 5x = 0 21 + 5x = -7 + 0 21 + 5x = -7 Add '-21' to each side of the equation. 21 + -21 + 5x = -7 + -21 Combine like terms: 21 + -21 = 0 0 + 5x = -7 + -21 5x = -7 + -21 Combine like terms: -7 + -21 = -28 5x = -28 Divide each side by '5'. x = -5.6 Simplifying x = -5.6
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