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Simplifying 21 = 6 + -2.3 + -2.7X Combine like terms: 6 + -2.3 = 3.7 21 = 3.7 + -2.7X Solving 21 = 3.7 + -2.7X Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '2.7X' to each side of the equation. 21 + 2.7X = 3.7 + -2.7X + 2.7X Combine like terms: -2.7X + 2.7X = 0.0 21 + 2.7X = 3.7 + 0.0 21 + 2.7X = 3.7 Add '-21' to each side of the equation. 21 + -21 + 2.7X = 3.7 + -21 Combine like terms: 21 + -21 = 0 0 + 2.7X = 3.7 + -21 2.7X = 3.7 + -21 Combine like terms: 3.7 + -21 = -17.3 2.7X = -17.3 Divide each side by '2.7'. X = -6.407407407 Simplifying X = -6.407407407
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