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Simplifying 7 + -8x = 20 + -15x Solving 7 + -8x = 20 + -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. 7 + -8x + 15x = 20 + -15x + 15x Combine like terms: -8x + 15x = 7x 7 + 7x = 20 + -15x + 15x Combine like terms: -15x + 15x = 0 7 + 7x = 20 + 0 7 + 7x = 20 Add '-7' to each side of the equation. 7 + -7 + 7x = 20 + -7 Combine like terms: 7 + -7 = 0 0 + 7x = 20 + -7 7x = 20 + -7 Combine like terms: 20 + -7 = 13 7x = 13 Divide each side by '7'. x = 1.857142857 Simplifying x = 1.857142857
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