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Simplifying -31 = -7 + -3x Solving -31 = -7 + -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. -31 + 3x = -7 + -3x + 3x Combine like terms: -3x + 3x = 0 -31 + 3x = -7 + 0 -31 + 3x = -7 Add '31' to each side of the equation. -31 + 31 + 3x = -7 + 31 Combine like terms: -31 + 31 = 0 0 + 3x = -7 + 31 3x = -7 + 31 Combine like terms: -7 + 31 = 24 3x = 24 Divide each side by '3'. x = 8 Simplifying x = 8
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