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Simplifying 4r + 15 = 8r + 3 Reorder the terms: 15 + 4r = 8r + 3 Reorder the terms: 15 + 4r = 3 + 8r Solving 15 + 4r = 3 + 8r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-8r' to each side of the equation. 15 + 4r + -8r = 3 + 8r + -8r Combine like terms: 4r + -8r = -4r 15 + -4r = 3 + 8r + -8r Combine like terms: 8r + -8r = 0 15 + -4r = 3 + 0 15 + -4r = 3 Add '-15' to each side of the equation. 15 + -15 + -4r = 3 + -15 Combine like terms: 15 + -15 = 0 0 + -4r = 3 + -15 -4r = 3 + -15 Combine like terms: 3 + -15 = -12 -4r = -12 Divide each side by '-4'. r = 3 Simplifying r = 3
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