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