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Simplifying -7x + 15 = -3x + -7 Reorder the terms: 15 + -7x = -3x + -7 Reorder the terms: 15 + -7x = -7 + -3x Solving 15 + -7x = -7 + -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. 15 + -7x + 3x = -7 + -3x + 3x Combine like terms: -7x + 3x = -4x 15 + -4x = -7 + -3x + 3x Combine like terms: -3x + 3x = 0 15 + -4x = -7 + 0 15 + -4x = -7 Add '-15' to each side of the equation. 15 + -15 + -4x = -7 + -15 Combine like terms: 15 + -15 = 0 0 + -4x = -7 + -15 -4x = -7 + -15 Combine like terms: -7 + -15 = -22 -4x = -22 Divide each side by '-4'. x = 5.5 Simplifying x = 5.5
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