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Simplifying -87 + -8x = 7x + 18 Reorder the terms: -87 + -8x = 18 + 7x Solving -87 + -8x = 18 + 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 + -8x + -7x = 18 + 7x + -7x Combine like terms: -8x + -7x = -15x -87 + -15x = 18 + 7x + -7x Combine like terms: 7x + -7x = 0 -87 + -15x = 18 + 0 -87 + -15x = 18 Add '87' to each side of the equation. -87 + 87 + -15x = 18 + 87 Combine like terms: -87 + 87 = 0 0 + -15x = 18 + 87 -15x = 18 + 87 Combine like terms: 18 + 87 = 105 -15x = 105 Divide each side by '-15'. x = -7 Simplifying x = -7
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