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Simplifying 21 = 13x Solving 21 = 13x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13x' to each side of the equation. 21 + -13x = 13x + -13x Combine like terms: 13x + -13x = 0 21 + -13x = 0 Add '-21' to each side of the equation. 21 + -21 + -13x = 0 + -21 Combine like terms: 21 + -21 = 0 0 + -13x = 0 + -21 -13x = 0 + -21 Combine like terms: 0 + -21 = -21 -13x = -21 Divide each side by '-13'. x = 1.615384615 Simplifying x = 1.615384615
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