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Simplifying 87 = -1x + -6x + 3 Reorder the terms: 87 = 3 + -1x + -6x Combine like terms: -1x + -6x = -7x 87 = 3 + -7x Solving 87 = 3 + -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. 87 + 7x = 3 + -7x + 7x Combine like terms: -7x + 7x = 0 87 + 7x = 3 + 0 87 + 7x = 3 Add '-87' to each side of the equation. 87 + -87 + 7x = 3 + -87 Combine like terms: 87 + -87 = 0 0 + 7x = 3 + -87 7x = 3 + -87 Combine like terms: 3 + -87 = -84 7x = -84 Divide each side by '7'. x = -12 Simplifying x = -12
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