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Simplifying 7x2 + 30 = 9 Reorder the terms: 30 + 7x2 = 9 Solving 30 + 7x2 = 9 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + 7x2 = 9 + -30 Combine like terms: 30 + -30 = 0 0 + 7x2 = 9 + -30 7x2 = 9 + -30 Combine like terms: 9 + -30 = -21 7x2 = -21 Divide each side by '7'. x2 = -3 Simplifying x2 = -3 Reorder the terms: 3 + x2 = -3 + 3 Combine like terms: -3 + 3 = 0 3 + x2 = 0 The solution to this equation could not be determined.
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