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Simplifying -2x + 28 = 7x + -21 Reorder the terms: 28 + -2x = 7x + -21 Reorder the terms: 28 + -2x = -21 + 7x Solving 28 + -2x = -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. 28 + -2x + -7x = -21 + 7x + -7x Combine like terms: -2x + -7x = -9x 28 + -9x = -21 + 7x + -7x Combine like terms: 7x + -7x = 0 28 + -9x = -21 + 0 28 + -9x = -21 Add '-28' to each side of the equation. 28 + -28 + -9x = -21 + -28 Combine like terms: 28 + -28 = 0 0 + -9x = -21 + -28 -9x = -21 + -28 Combine like terms: -21 + -28 = -49 -9x = -49 Divide each side by '-9'. x = 5.444444444 Simplifying x = 5.444444444
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