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Simplifying 3.1 = r + -7.5 Reorder the terms: 3.1 = -7.5 + r Solving 3.1 = -7.5 + r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1r' to each side of the equation. 3.1 + -1r = -7.5 + r + -1r Combine like terms: r + -1r = 0 3.1 + -1r = -7.5 + 0 3.1 + -1r = -7.5 Add '-3.1' to each side of the equation. 3.1 + -3.1 + -1r = -7.5 + -3.1 Combine like terms: 3.1 + -3.1 = 0.0 0.0 + -1r = -7.5 + -3.1 -1r = -7.5 + -3.1 Combine like terms: -7.5 + -3.1 = -10.6 -1r = -10.6 Divide each side by '-1'. r = 10.6 Simplifying r = 10.6
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