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Simplifying 8x + -7(x + 3) = x + -21 Reorder the terms: 8x + -7(3 + x) = x + -21 8x + (3 * -7 + x * -7) = x + -21 8x + (-21 + -7x) = x + -21 Reorder the terms: -21 + 8x + -7x = x + -21 Combine like terms: 8x + -7x = 1x -21 + 1x = x + -21 Reorder the terms: -21 + 1x = -21 + x Add '21' to each side of the equation. -21 + 21 + 1x = -21 + 21 + x Combine like terms: -21 + 21 = 0 0 + 1x = -21 + 21 + x 1x = -21 + 21 + x Combine like terms: -21 + 21 = 0 1x = 0 + x 1x = x Solving 1x = x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. 1x + -1x = x + -1x Combine like terms: 1x + -1x = 0 0 = x + -1x Combine like terms: x + -1x = 0 0 = 0 Simplifying 0 = 0 The solution to this equation could not be determined.
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