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Simplifying -7(x + 3) = 3x + -1 Reorder the terms: -7(3 + x) = 3x + -1 (3 * -7 + x * -7) = 3x + -1 (-21 + -7x) = 3x + -1 Reorder the terms: -21 + -7x = -1 + 3x Solving -21 + -7x = -1 + 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. -21 + -7x + -3x = -1 + 3x + -3x Combine like terms: -7x + -3x = -10x -21 + -10x = -1 + 3x + -3x Combine like terms: 3x + -3x = 0 -21 + -10x = -1 + 0 -21 + -10x = -1 Add '21' to each side of the equation. -21 + 21 + -10x = -1 + 21 Combine like terms: -21 + 21 = 0 0 + -10x = -1 + 21 -10x = -1 + 21 Combine like terms: -1 + 21 = 20 -10x = 20 Divide each side by '-10'. x = -2 Simplifying x = -2
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