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Simplifying 21 = 3.5x Solving 21 = 3.5x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5x' to each side of the equation. 21 + -3.5x = 3.5x + -3.5x Combine like terms: 3.5x + -3.5x = 0.0 21 + -3.5x = 0.0 Add '-21' to each side of the equation. 21 + -21 + -3.5x = 0.0 + -21 Combine like terms: 21 + -21 = 0 0 + -3.5x = 0.0 + -21 -3.5x = 0.0 + -21 Combine like terms: 0.0 + -21 = -21 -3.5x = -21 Divide each side by '-3.5'. x = 6 Simplifying x = 6
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