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Simplifying 511 = -7(-9x + 8) Reorder the terms: 511 = -7(8 + -9x) 511 = (8 * -7 + -9x * -7) 511 = (-56 + 63x) Solving 511 = -56 + 63x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-63x' to each side of the equation. 511 + -63x = -56 + 63x + -63x Combine like terms: 63x + -63x = 0 511 + -63x = -56 + 0 511 + -63x = -56 Add '-511' to each side of the equation. 511 + -511 + -63x = -56 + -511 Combine like terms: 511 + -511 = 0 0 + -63x = -56 + -511 -63x = -56 + -511 Combine like terms: -56 + -511 = -567 -63x = -567 Divide each side by '-63'. x = 9 Simplifying x = 9
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