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Simplifying -3x + 45 = -87 + -7x Reorder the terms: 45 + -3x = -87 + -7x Solving 45 + -3x = -87 + -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. 45 + -3x + 7x = -87 + -7x + 7x Combine like terms: -3x + 7x = 4x 45 + 4x = -87 + -7x + 7x Combine like terms: -7x + 7x = 0 45 + 4x = -87 + 0 45 + 4x = -87 Add '-45' to each side of the equation. 45 + -45 + 4x = -87 + -45 Combine like terms: 45 + -45 = 0 0 + 4x = -87 + -45 4x = -87 + -45 Combine like terms: -87 + -45 = -132 4x = -132 Divide each side by '4'. x = -33 Simplifying x = -33
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