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Simplifying 7x2 + 9x + h = 0 Reorder the terms: h + 9x + 7x2 = 0 Solving h + 9x + 7x2 = 0 Solving for variable 'h'. Move all terms containing h to the left, all other terms to the right. Add '-9x' to each side of the equation. h + 9x + -9x + 7x2 = 0 + -9x Combine like terms: 9x + -9x = 0 h + 0 + 7x2 = 0 + -9x h + 7x2 = 0 + -9x Remove the zero: h + 7x2 = -9x Add '-7x2' to each side of the equation. h + 7x2 + -7x2 = -9x + -7x2 Combine like terms: 7x2 + -7x2 = 0 h + 0 = -9x + -7x2 h = -9x + -7x2 Simplifying h = -9x + -7x2
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