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Simplifying 21 = 36 + -0.75x Solving 21 = 36 + -0.75x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75x' to each side of the equation. 21 + 0.75x = 36 + -0.75x + 0.75x Combine like terms: -0.75x + 0.75x = 0.00 21 + 0.75x = 36 + 0.00 21 + 0.75x = 36 Add '-21' to each side of the equation. 21 + -21 + 0.75x = 36 + -21 Combine like terms: 21 + -21 = 0 0 + 0.75x = 36 + -21 0.75x = 36 + -21 Combine like terms: 36 + -21 = 15 0.75x = 15 Divide each side by '0.75'. x = 20 Simplifying x = 20
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