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Simplifying -1x + 15 = -7x + 3 + -7 Reorder the terms: 15 + -1x = -7x + 3 + -7 Reorder the terms: 15 + -1x = 3 + -7 + -7x Combine like terms: 3 + -7 = -4 15 + -1x = -4 + -7x Solving 15 + -1x = -4 + -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 + -1x + 7x = -4 + -7x + 7x Combine like terms: -1x + 7x = 6x 15 + 6x = -4 + -7x + 7x Combine like terms: -7x + 7x = 0 15 + 6x = -4 + 0 15 + 6x = -4 Add '-15' to each side of the equation. 15 + -15 + 6x = -4 + -15 Combine like terms: 15 + -15 = 0 0 + 6x = -4 + -15 6x = -4 + -15 Combine like terms: -4 + -15 = -19 6x = -19 Divide each side by '6'. x = -3.166666667 Simplifying x = -3.166666667
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