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Simplifying 4x + 13 = -15 + -3x Reorder the terms: 13 + 4x = -15 + -3x Solving 13 + 4x = -15 + -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 + 4x + 3x = -15 + -3x + 3x Combine like terms: 4x + 3x = 7x 13 + 7x = -15 + -3x + 3x Combine like terms: -3x + 3x = 0 13 + 7x = -15 + 0 13 + 7x = -15 Add '-13' to each side of the equation. 13 + -13 + 7x = -15 + -13 Combine like terms: 13 + -13 = 0 0 + 7x = -15 + -13 7x = -15 + -13 Combine like terms: -15 + -13 = -28 7x = -28 Divide each side by '7'. x = -4 Simplifying x = -4
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