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Simplifying -7.8 = 4.4 + 3r Solving -7.8 = 4.4 + 3r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-3r' to each side of the equation. -7.8 + -3r = 4.4 + 3r + -3r Combine like terms: 3r + -3r = 0 -7.8 + -3r = 4.4 + 0 -7.8 + -3r = 4.4 Add '7.8' to each side of the equation. -7.8 + 7.8 + -3r = 4.4 + 7.8 Combine like terms: -7.8 + 7.8 = 0.0 0.0 + -3r = 4.4 + 7.8 -3r = 4.4 + 7.8 Combine like terms: 4.4 + 7.8 = 12.2 -3r = 12.2 Divide each side by '-3'. r = -4.066666667 Simplifying r = -4.066666667
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