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Simplifying -31 + x = 38 + 4x Solving -31 + x = 38 + 4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4x' to each side of the equation. -31 + x + -4x = 38 + 4x + -4x Combine like terms: x + -4x = -3x -31 + -3x = 38 + 4x + -4x Combine like terms: 4x + -4x = 0 -31 + -3x = 38 + 0 -31 + -3x = 38 Add '31' to each side of the equation. -31 + 31 + -3x = 38 + 31 Combine like terms: -31 + 31 = 0 0 + -3x = 38 + 31 -3x = 38 + 31 Combine like terms: 38 + 31 = 69 -3x = 69 Divide each side by '-3'. x = -23 Simplifying x = -23
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