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Simplifying 7x2 + 7 = -21 Reorder the terms: 7 + 7x2 = -21 Solving 7 + 7x2 = -21 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 7x2 = -21 + -7 Combine like terms: 7 + -7 = 0 0 + 7x2 = -21 + -7 7x2 = -21 + -7 Combine like terms: -21 + -7 = -28 7x2 = -28 Divide each side by '7'. x2 = -4 Simplifying x2 = -4 Reorder the terms: 4 + x2 = -4 + 4 Combine like terms: -4 + 4 = 0 4 + x2 = 0 The solution to this equation could not be determined.
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