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Simplifying -7 = 3x + -15 + 7x Reorder the terms: -7 = -15 + 3x + 7x Combine like terms: 3x + 7x = 10x -7 = -15 + 10x Solving -7 = -15 + 10x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10x' to each side of the equation. -7 + -10x = -15 + 10x + -10x Combine like terms: 10x + -10x = 0 -7 + -10x = -15 + 0 -7 + -10x = -15 Add '7' to each side of the equation. -7 + 7 + -10x = -15 + 7 Combine like terms: -7 + 7 = 0 0 + -10x = -15 + 7 -10x = -15 + 7 Combine like terms: -15 + 7 = -8 -10x = -8 Divide each side by '-10'. x = 0.8 Simplifying x = 0.8
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