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Simplifying 5 + -5 = 5x + 2x Combine like terms: 5 + -5 = 0 0 = 5x + 2x Combine like terms: 5x + 2x = 7x 0 = 7x Solving 0 = 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. 0 + -7x = 7x + -7x Remove the zero: -7x = 7x + -7x Combine like terms: 7x + -7x = 0 -7x = 0 Divide each side by '-7'. x = 0 Simplifying x = 0
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