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Simplifying 9x = 7(-21x + 3) Reorder the terms: 9x = 7(3 + -21x) 9x = (3 * 7 + -21x * 7) 9x = (21 + -147x) Solving 9x = 21 + -147x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '147x' to each side of the equation. 9x + 147x = 21 + -147x + 147x Combine like terms: 9x + 147x = 156x 156x = 21 + -147x + 147x Combine like terms: -147x + 147x = 0 156x = 21 + 0 156x = 21 Divide each side by '156'. x = 0.1346153846 Simplifying x = 0.1346153846
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