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Simplifying -7(3X + 6) + -7 = -133 Reorder the terms: -7(6 + 3X) + -7 = -133 (6 * -7 + 3X * -7) + -7 = -133 (-42 + -21X) + -7 = -133 Reorder the terms: -42 + -7 + -21X = -133 Combine like terms: -42 + -7 = -49 -49 + -21X = -133 Solving -49 + -21X = -133 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '49' to each side of the equation. -49 + 49 + -21X = -133 + 49 Combine like terms: -49 + 49 = 0 0 + -21X = -133 + 49 -21X = -133 + 49 Combine like terms: -133 + 49 = -84 -21X = -84 Divide each side by '-21'. X = 4 Simplifying X = 4
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