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Simplifying ax3 + bx2 + cx = 7 Solving ax3 + bx2 + cx = 7 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1bx2' to each side of the equation. ax3 + bx2 + -1bx2 + cx = 7 + -1bx2 Combine like terms: bx2 + -1bx2 = 0 ax3 + 0 + cx = 7 + -1bx2 ax3 + cx = 7 + -1bx2 Add '-1cx' to each side of the equation. ax3 + cx + -1cx = 7 + -1bx2 + -1cx Combine like terms: cx + -1cx = 0 ax3 + 0 = 7 + -1bx2 + -1cx ax3 = 7 + -1bx2 + -1cx Divide each side by 'x3'. a = 7x-3 + -1bx-1 + -1cx-2 Simplifying a = 7x-3 + -1bx-1 + -1cx-2 Reorder the terms: a = -1bx-1 + -1cx-2 + 7x-3
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