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Simplifying 13 + -8x = 40 + -15x Solving 13 + -8x = 40 + -15x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '15x' to each side of the equation. 13 + -8x + 15x = 40 + -15x + 15x Combine like terms: -8x + 15x = 7x 13 + 7x = 40 + -15x + 15x Combine like terms: -15x + 15x = 0 13 + 7x = 40 + 0 13 + 7x = 40 Add '-13' to each side of the equation. 13 + -13 + 7x = 40 + -13 Combine like terms: 13 + -13 = 0 0 + 7x = 40 + -13 7x = 40 + -13 Combine like terms: 40 + -13 = 27 7x = 27 Divide each side by '7'. x = 3.857142857 Simplifying x = 3.857142857
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