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Simplifying 5x + 5 = -21 + -7x Reorder the terms: 5 + 5x = -21 + -7x Solving 5 + 5x = -21 + -7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7x' to each side of the equation. 5 + 5x + 7x = -21 + -7x + 7x Combine like terms: 5x + 7x = 12x 5 + 12x = -21 + -7x + 7x Combine like terms: -7x + 7x = 0 5 + 12x = -21 + 0 5 + 12x = -21 Add '-5' to each side of the equation. 5 + -5 + 12x = -21 + -5 Combine like terms: 5 + -5 = 0 0 + 12x = -21 + -5 12x = -21 + -5 Combine like terms: -21 + -5 = -26 12x = -26 Divide each side by '12'. x = -2.166666667 Simplifying x = -2.166666667
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