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Simplifying 2d + 3.2 = 7.8d Reorder the terms: 3.2 + 2d = 7.8d Solving 3.2 + 2d = 7.8d Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '-7.8d' to each side of the equation. 3.2 + 2d + -7.8d = 7.8d + -7.8d Combine like terms: 2d + -7.8d = -5.8d 3.2 + -5.8d = 7.8d + -7.8d Combine like terms: 7.8d + -7.8d = 0.0 3.2 + -5.8d = 0.0 Add '-3.2' to each side of the equation. 3.2 + -3.2 + -5.8d = 0.0 + -3.2 Combine like terms: 3.2 + -3.2 = 0.0 0.0 + -5.8d = 0.0 + -3.2 -5.8d = 0.0 + -3.2 Combine like terms: 0.0 + -3.2 = -3.2 -5.8d = -3.2 Divide each side by '-5.8'. d = 0.5517241379 Simplifying d = 0.5517241379
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