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Simplifying r + 7.8 = 4r + 6 Reorder the terms: 7.8 + r = 4r + 6 Reorder the terms: 7.8 + r = 6 + 4r Solving 7.8 + r = 6 + 4r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-4r' to each side of the equation. 7.8 + r + -4r = 6 + 4r + -4r Combine like terms: r + -4r = -3r 7.8 + -3r = 6 + 4r + -4r Combine like terms: 4r + -4r = 0 7.8 + -3r = 6 + 0 7.8 + -3r = 6 Add '-7.8' to each side of the equation. 7.8 + -7.8 + -3r = 6 + -7.8 Combine like terms: 7.8 + -7.8 = 0.0 0.0 + -3r = 6 + -7.8 -3r = 6 + -7.8 Combine like terms: 6 + -7.8 = -1.8 -3r = -1.8 Divide each side by '-3'. r = 0.6 Simplifying r = 0.6
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