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Simplifying -86 + -9x = 78 + -30x Solving -86 + -9x = 78 + -30x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '30x' to each side of the equation. -86 + -9x + 30x = 78 + -30x + 30x Combine like terms: -9x + 30x = 21x -86 + 21x = 78 + -30x + 30x Combine like terms: -30x + 30x = 0 -86 + 21x = 78 + 0 -86 + 21x = 78 Add '86' to each side of the equation. -86 + 86 + 21x = 78 + 86 Combine like terms: -86 + 86 = 0 0 + 21x = 78 + 86 21x = 78 + 86 Combine like terms: 78 + 86 = 164 21x = 164 Divide each side by '21'. x = 7.80952381 Simplifying x = 7.80952381
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