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Simplifying 21 = 90n Solving 21 = 90n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-90n' to each side of the equation. 21 + -90n = 90n + -90n Combine like terms: 90n + -90n = 0 21 + -90n = 0 Add '-21' to each side of the equation. 21 + -21 + -90n = 0 + -21 Combine like terms: 21 + -21 = 0 0 + -90n = 0 + -21 -90n = 0 + -21 Combine like terms: 0 + -21 = -21 -90n = -21 Divide each side by '-90'. n = 0.2333333333 Simplifying n = 0.2333333333
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