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Simplifying 21 + -1j = 6 + j Solving 21 + -1j = 6 + j Solving for variable 'j'. Move all terms containing j to the left, all other terms to the right. Add '-1j' to each side of the equation. 21 + -1j + -1j = 6 + j + -1j Combine like terms: -1j + -1j = -2j 21 + -2j = 6 + j + -1j Combine like terms: j + -1j = 0 21 + -2j = 6 + 0 21 + -2j = 6 Add '-21' to each side of the equation. 21 + -21 + -2j = 6 + -21 Combine like terms: 21 + -21 = 0 0 + -2j = 6 + -21 -2j = 6 + -21 Combine like terms: 6 + -21 = -15 -2j = -15 Divide each side by '-2'. j = 7.5 Simplifying j = 7.5
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