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Simplifying 8x + 15 = x + -13 Reorder the terms: 15 + 8x = x + -13 Reorder the terms: 15 + 8x = -13 + x Solving 15 + 8x = -13 + 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. 15 + 8x + -1x = -13 + x + -1x Combine like terms: 8x + -1x = 7x 15 + 7x = -13 + x + -1x Combine like terms: x + -1x = 0 15 + 7x = -13 + 0 15 + 7x = -13 Add '-15' to each side of the equation. 15 + -15 + 7x = -13 + -15 Combine like terms: 15 + -15 = 0 0 + 7x = -13 + -15 7x = -13 + -15 Combine like terms: -13 + -15 = -28 7x = -28 Divide each side by '7'. x = -4 Simplifying x = -4
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