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Simplifying 245 = -7x + -7(1 + -7x) 245 = -7x + (1 * -7 + -7x * -7) 245 = -7x + (-7 + 49x) Reorder the terms: 245 = -7 + -7x + 49x Combine like terms: -7x + 49x = 42x 245 = -7 + 42x Solving 245 = -7 + 42x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42x' to each side of the equation. 245 + -42x = -7 + 42x + -42x Combine like terms: 42x + -42x = 0 245 + -42x = -7 + 0 245 + -42x = -7 Add '-245' to each side of the equation. 245 + -245 + -42x = -7 + -245 Combine like terms: 245 + -245 = 0 0 + -42x = -7 + -245 -42x = -7 + -245 Combine like terms: -7 + -245 = -252 -42x = -252 Divide each side by '-42'. x = 6 Simplifying x = 6
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