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Simplifying 287 = 7(-7 + -8x) 287 = (-7 * 7 + -8x * 7) 287 = (-49 + -56x) Solving 287 = -49 + -56x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '56x' to each side of the equation. 287 + 56x = -49 + -56x + 56x Combine like terms: -56x + 56x = 0 287 + 56x = -49 + 0 287 + 56x = -49 Add '-287' to each side of the equation. 287 + -287 + 56x = -49 + -287 Combine like terms: 287 + -287 = 0 0 + 56x = -49 + -287 56x = -49 + -287 Combine like terms: -49 + -287 = -336 56x = -336 Divide each side by '56'. x = -6 Simplifying x = -6
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