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Simplifying 31 = 4 + -7e Solving 31 = 4 + -7e Solving for variable 'e'. Move all terms containing e to the left, all other terms to the right. Add '7e' to each side of the equation. 31 + 7e = 4 + -7e + 7e Combine like terms: -7e + 7e = 0 31 + 7e = 4 + 0 31 + 7e = 4 Add '-31' to each side of the equation. 31 + -31 + 7e = 4 + -31 Combine like terms: 31 + -31 = 0 0 + 7e = 4 + -31 7e = 4 + -31 Combine like terms: 4 + -31 = -27 7e = -27 Divide each side by '7'. e = -3.857142857 Simplifying e = -3.857142857
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