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Simplifying 7(-7x + -7) = -637 Reorder the terms: 7(-7 + -7x) = -637 (-7 * 7 + -7x * 7) = -637 (-49 + -49x) = -637 Solving -49 + -49x = -637 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 + -49x = -637 + 49 Combine like terms: -49 + 49 = 0 0 + -49x = -637 + 49 -49x = -637 + 49 Combine like terms: -637 + 49 = -588 -49x = -588 Divide each side by '-49'. x = 12 Simplifying x = 12
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