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Simplifying x + 87 = 4x Reorder the terms: 87 + x = 4x Solving 87 + x = 4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4x' to each side of the equation. 87 + x + -4x = 4x + -4x Combine like terms: x + -4x = -3x 87 + -3x = 4x + -4x Combine like terms: 4x + -4x = 0 87 + -3x = 0 Add '-87' to each side of the equation. 87 + -87 + -3x = 0 + -87 Combine like terms: 87 + -87 = 0 0 + -3x = 0 + -87 -3x = 0 + -87 Combine like terms: 0 + -87 = -87 -3x = -87 Divide each side by '-3'. x = 29 Simplifying x = 29
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