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Simplifying -15 + 5x = -7 + 2x + 5x Combine like terms: 2x + 5x = 7x -15 + 5x = -7 + 7x Solving -15 + 5x = -7 + 7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7x' to each side of the equation. -15 + 5x + -7x = -7 + 7x + -7x Combine like terms: 5x + -7x = -2x -15 + -2x = -7 + 7x + -7x Combine like terms: 7x + -7x = 0 -15 + -2x = -7 + 0 -15 + -2x = -7 Add '15' to each side of the equation. -15 + 15 + -2x = -7 + 15 Combine like terms: -15 + 15 = 0 0 + -2x = -7 + 15 -2x = -7 + 15 Combine like terms: -7 + 15 = 8 -2x = 8 Divide each side by '-2'. x = -4 Simplifying x = -4
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