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Simplifying 13x + -7(-3x + -1) = -63 Reorder the terms: 13x + -7(-1 + -3x) = -63 13x + (-1 * -7 + -3x * -7) = -63 13x + (7 + 21x) = -63 Reorder the terms: 7 + 13x + 21x = -63 Combine like terms: 13x + 21x = 34x 7 + 34x = -63 Solving 7 + 34x = -63 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 34x = -63 + -7 Combine like terms: 7 + -7 = 0 0 + 34x = -63 + -7 34x = -63 + -7 Combine like terms: -63 + -7 = -70 34x = -70 Divide each side by '34'. x = -2.058823529 Simplifying x = -2.058823529
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