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Simplifying 7e + 5f + -21 = 3 Reorder the terms: -21 + 7e + 5f = 3 Solving -21 + 7e + 5f = 3 Solving for variable 'e'. Move all terms containing e to the left, all other terms to the right. Add '21' to each side of the equation. -21 + 7e + 21 + 5f = 3 + 21 Reorder the terms: -21 + 21 + 7e + 5f = 3 + 21 Combine like terms: -21 + 21 = 0 0 + 7e + 5f = 3 + 21 7e + 5f = 3 + 21 Combine like terms: 3 + 21 = 24 7e + 5f = 24 Add '-5f' to each side of the equation. 7e + 5f + -5f = 24 + -5f Combine like terms: 5f + -5f = 0 7e + 0 = 24 + -5f 7e = 24 + -5f Divide each side by '7'. e = 3.428571429 + -0.7142857143f Simplifying e = 3.428571429 + -0.7142857143f
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