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Simplifying x + -7 = -20 Reorder the terms: -7 + x = -20 Solving -7 + x = -20 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 + x = -20 + 7 Combine like terms: -7 + 7 = 0 0 + x = -20 + 7 x = -20 + 7 Combine like terms: -20 + 7 = -13 x = -13 Simplifying x = -13
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