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Simplifying 6.20 = 2.75 + 15r Solving 6.20 = 2.75 + 15r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-15r' to each side of the equation. 6.20 + -15r = 2.75 + 15r + -15r Combine like terms: 15r + -15r = 0 6.20 + -15r = 2.75 + 0 6.20 + -15r = 2.75 Add '-6.20' to each side of the equation. 6.20 + -6.20 + -15r = 2.75 + -6.20 Combine like terms: 6.20 + -6.20 = 0.00 0.00 + -15r = 2.75 + -6.20 -15r = 2.75 + -6.20 Combine like terms: 2.75 + -6.20 = -3.45 -15r = -3.45 Divide each side by '-15'. r = 0.23 Simplifying r = 0.23
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