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Simplifying 12 + -3 = 13x Combine like terms: 12 + -3 = 9 9 = 13x Solving 9 = 13x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13x' to each side of the equation. 9 + -13x = 13x + -13x Combine like terms: 13x + -13x = 0 9 + -13x = 0 Add '-9' to each side of the equation. 9 + -9 + -13x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -13x = 0 + -9 -13x = 0 + -9 Combine like terms: 0 + -9 = -9 -13x = -9 Divide each side by '-13'. x = 0.6923076923 Simplifying x = 0.6923076923
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