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Simplifying 31 = -4 + -7x Solving 31 = -4 + -7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7x' to each side of the equation. 31 + 7x = -4 + -7x + 7x Combine like terms: -7x + 7x = 0 31 + 7x = -4 + 0 31 + 7x = -4 Add '-31' to each side of the equation. 31 + -31 + 7x = -4 + -31 Combine like terms: 31 + -31 = 0 0 + 7x = -4 + -31 7x = -4 + -31 Combine like terms: -4 + -31 = -35 7x = -35 Divide each side by '7'. x = -5 Simplifying x = -5
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