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Simplifying 5x2 + -15 = 5x2 + 2x Reorder the terms: -15 + 5x2 = 5x2 + 2x Reorder the terms: -15 + 5x2 = 2x + 5x2 Add '-5x2' to each side of the equation. -15 + 5x2 + -5x2 = 2x + 5x2 + -5x2 Combine like terms: 5x2 + -5x2 = 0 -15 + 0 = 2x + 5x2 + -5x2 -15 = 2x + 5x2 + -5x2 Combine like terms: 5x2 + -5x2 = 0 -15 = 2x + 0 -15 = 2x Solving -15 = 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. -15 + -2x = 2x + -2x Combine like terms: 2x + -2x = 0 -15 + -2x = 0 Add '15' to each side of the equation. -15 + 15 + -2x = 0 + 15 Combine like terms: -15 + 15 = 0 0 + -2x = 0 + 15 -2x = 0 + 15 Combine like terms: 0 + 15 = 15 -2x = 15 Divide each side by '-2'. x = -7.5 Simplifying x = -7.5
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