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Simplifying 9(x + -7) = 7 Reorder the terms: 9(-7 + x) = 7 (-7 * 9 + x * 9) = 7 (-63 + 9x) = 7 Solving -63 + 9x = 7 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '63' to each side of the equation. -63 + 63 + 9x = 7 + 63 Combine like terms: -63 + 63 = 0 0 + 9x = 7 + 63 9x = 7 + 63 Combine like terms: 7 + 63 = 70 9x = 70 Divide each side by '9'. x = 7.777777778 Simplifying x = 7.777777778
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