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Simplifying 21i + 42 = 15e + 5 Reorder the terms: 42 + 21i = 15e + 5 Reorder the terms: 42 + 21i = 5 + 15e Solving 42 + 21i = 5 + 15e Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Add '-42' to each side of the equation. 42 + -42 + 21i = 5 + -42 + 15e Combine like terms: 42 + -42 = 0 0 + 21i = 5 + -42 + 15e 21i = 5 + -42 + 15e Combine like terms: 5 + -42 = -37 21i = -37 + 15e Divide each side by '21'. i = -1.761904762 + 0.7142857143e Simplifying i = -1.761904762 + 0.7142857143e
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