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Simplifying 7x + 13 = 9 + -3x Reorder the terms: 13 + 7x = 9 + -3x Solving 13 + 7x = 9 + -3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3x' to each side of the equation. 13 + 7x + 3x = 9 + -3x + 3x Combine like terms: 7x + 3x = 10x 13 + 10x = 9 + -3x + 3x Combine like terms: -3x + 3x = 0 13 + 10x = 9 + 0 13 + 10x = 9 Add '-13' to each side of the equation. 13 + -13 + 10x = 9 + -13 Combine like terms: 13 + -13 = 0 0 + 10x = 9 + -13 10x = 9 + -13 Combine like terms: 9 + -13 = -4 10x = -4 Divide each side by '10'. x = -0.4 Simplifying x = -0.4
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