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Simplifying 3x * 3 = x + 7 Reorder the terms for easier multiplication: 3 * 3x = x + 7 Multiply 3 * 3 9x = x + 7 Reorder the terms: 9x = 7 + x Solving 9x = 7 + x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. 9x + -1x = 7 + x + -1x Combine like terms: 9x + -1x = 8x 8x = 7 + x + -1x Combine like terms: x + -1x = 0 8x = 7 + 0 8x = 7 Divide each side by '8'. x = 0.875 Simplifying x = 0.875
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