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Simplifying 87 = 2x + 5x + 3 Reorder the terms: 87 = 3 + 2x + 5x Combine like terms: 2x + 5x = 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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