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Simplifying 280 = -7(-6 + 7x) + -7 280 = (-6 * -7 + 7x * -7) + -7 280 = (42 + -49x) + -7 Reorder the terms: 280 = 42 + -7 + -49x Combine like terms: 42 + -7 = 35 280 = 35 + -49x Solving 280 = 35 + -49x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '49x' to each side of the equation. 280 + 49x = 35 + -49x + 49x Combine like terms: -49x + 49x = 0 280 + 49x = 35 + 0 280 + 49x = 35 Add '-280' to each side of the equation. 280 + -280 + 49x = 35 + -280 Combine like terms: 280 + -280 = 0 0 + 49x = 35 + -280 49x = 35 + -280 Combine like terms: 35 + -280 = -245 49x = -245 Divide each side by '49'. x = -5 Simplifying x = -5
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