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Simplifying 13x + -9 = x + 7 Reorder the terms: -9 + 13x = x + 7 Reorder the terms: -9 + 13x = 7 + x Solving -9 + 13x = 7 + x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. -9 + 13x + -1x = 7 + x + -1x Combine like terms: 13x + -1x = 12x -9 + 12x = 7 + x + -1x Combine like terms: x + -1x = 0 -9 + 12x = 7 + 0 -9 + 12x = 7 Add '9' to each side of the equation. -9 + 9 + 12x = 7 + 9 Combine like terms: -9 + 9 = 0 0 + 12x = 7 + 9 12x = 7 + 9 Combine like terms: 7 + 9 = 16 12x = 16 Divide each side by '12'. x = 1.333333333 Simplifying x = 1.333333333
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