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Simplifying 28 + -2x = 7 + -9x Solving 28 + -2x = 7 + -9x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9x' to each side of the equation. 28 + -2x + 9x = 7 + -9x + 9x Combine like terms: -2x + 9x = 7x 28 + 7x = 7 + -9x + 9x Combine like terms: -9x + 9x = 0 28 + 7x = 7 + 0 28 + 7x = 7 Add '-28' to each side of the equation. 28 + -28 + 7x = 7 + -28 Combine like terms: 28 + -28 = 0 0 + 7x = 7 + -28 7x = 7 + -28 Combine like terms: 7 + -28 = -21 7x = -21 Divide each side by '7'. x = -3 Simplifying x = -3
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