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Simplifying X + -1(7 + -1x) = -3 X + (7 * -1 + -1x * -1) = -3 X + (-7 + 1x) = -3 Reorder the terms: -7 + X + 1x = -3 Solving -7 + X + 1x = -3 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 + X + 7 + 1x = -3 + 7 Reorder the terms: -7 + 7 + X + 1x = -3 + 7 Combine like terms: -7 + 7 = 0 0 + X + 1x = -3 + 7 X + 1x = -3 + 7 Combine like terms: -3 + 7 = 4 X + 1x = 4 Add '-1x' to each side of the equation. X + 1x + -1x = 4 + -1x Combine like terms: 1x + -1x = 0 X + 0 = 4 + -1x X = 4 + -1x Simplifying X = 4 + -1x
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