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Simplifying -7x2 + -9 = 12 Reorder the terms: -9 + -7x2 = 12 Solving -9 + -7x2 = 12 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -7x2 = 12 + 9 Combine like terms: -9 + 9 = 0 0 + -7x2 = 12 + 9 -7x2 = 12 + 9 Combine like terms: 12 + 9 = 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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