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Simplifying N2 + -7 = 42 Reorder the terms: -7 + N2 = 42 Solving -7 + N2 = 42 Solving for variable 'N'. Move all terms containing N to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + N2 = 42 + 7 Combine like terms: -7 + 7 = 0 0 + N2 = 42 + 7 N2 = 42 + 7 Combine like terms: 42 + 7 = 49 N2 = 49 Simplifying N2 = 49 Take the square root of each side: N = {-7, 7}
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