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Simplifying x3 + 7x2 + 12h + -126 = 0 Reorder the terms: -126 + 12h + 7x2 + x3 = 0 Solving -126 + 12h + 7x2 + x3 = 0 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '126' to each side of the equation. -126 + 12h + 7x2 + 126 + x3 = 0 + 126 Reorder the terms: -126 + 126 + 12h + 7x2 + x3 = 0 + 126 Combine like terms: -126 + 126 = 0 0 + 12h + 7x2 + x3 = 0 + 126 12h + 7x2 + x3 = 0 + 126 Combine like terms: 0 + 126 = 126 12h + 7x2 + x3 = 126 Add '-7x2' to each side of the equation. 12h + 7x2 + -7x2 + x3 = 126 + -7x2 Combine like terms: 7x2 + -7x2 = 0 12h + 0 + x3 = 126 + -7x2 12h + x3 = 126 + -7x2 Add '-1x3' to each side of the equation. 12h + x3 + -1x3 = 126 + -7x2 + -1x3 Combine like terms: x3 + -1x3 = 0 12h + 0 = 126 + -7x2 + -1x3 12h = 126 + -7x2 + -1x3 Divide each side by '12'. h = 10.5 + -0.5833333333x2 + -0.08333333333x3 Simplifying h = 10.5 + -0.5833333333x2 + -0.08333333333x3
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