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Simplifying 10x * 2 + -1x + -21 = 0 Reorder the terms for easier multiplication: 10 * 2x + -1x + -21 = 0 Multiply 10 * 2 20x + -1x + -21 = 0 Reorder the terms: -21 + 20x + -1x = 0 Combine like terms: 20x + -1x = 19x -21 + 19x = 0 Solving -21 + 19x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '21' to each side of the equation. -21 + 21 + 19x = 0 + 21 Combine like terms: -21 + 21 = 0 0 + 19x = 0 + 21 19x = 0 + 21 Combine like terms: 0 + 21 = 21 19x = 21 Divide each side by '19'. x = 1.105263158 Simplifying x = 1.105263158
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