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Simplifying 5x + 5 = 7x + -21 Reorder the terms: 5 + 5x = 7x + -21 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 = -2x 5 + -2x = -21 + 7x + -7x Combine like terms: 7x + -7x = 0 5 + -2x = -21 + 0 5 + -2x = -21 Add '-5' to each side of the equation. 5 + -5 + -2x = -21 + -5 Combine like terms: 5 + -5 = 0 0 + -2x = -21 + -5 -2x = -21 + -5 Combine like terms: -21 + -5 = -26 -2x = -26 Divide each side by '-2'. x = 13 Simplifying x = 13
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