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Simplifying 1(x + 3) = x + 21 Reorder the terms: 1(3 + x) = x + 21 (3 * 1 + x * 1) = x + 21 (3 + 1x) = x + 21 Reorder the terms: 3 + 1x = 21 + x Solving 3 + 1x = 21 + 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. 3 + 1x + -1x = 21 + x + -1x Combine like terms: 1x + -1x = 0 3 + 0 = 21 + x + -1x 3 = 21 + x + -1x Combine like terms: x + -1x = 0 3 = 21 + 0 3 = 21 Add '-3' to each side of the equation. 3 + -3 = 21 + -3 Combine like terms: 3 + -3 = 0 0 = 21 + -3 Combine like terms: 21 + -3 = 18 0 = 18 Simplifying 0 = 18 Combine like terms: 0 + -18 = -18 -18 = 18 + -18 Combine like terms: 18 + -18 = 0 -18 = 0 The solution to this equation could not be determined.
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