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Simplifying 20 + 21h = 104 Solving 20 + 21h = 104 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + 21h = 104 + -20 Combine like terms: 20 + -20 = 0 0 + 21h = 104 + -20 21h = 104 + -20 Combine like terms: 104 + -20 = 84 21h = 84 Divide each side by '21'. h = 4 Simplifying h = 4
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