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Simplifying 8 = r + 19 Reorder the terms: 8 = 19 + r Solving 8 = 19 + 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. 8 + -1r = 19 + r + -1r Combine like terms: r + -1r = 0 8 + -1r = 19 + 0 8 + -1r = 19 Add '-8' to each side of the equation. 8 + -8 + -1r = 19 + -8 Combine like terms: 8 + -8 = 0 0 + -1r = 19 + -8 -1r = 19 + -8 Combine like terms: 19 + -8 = 11 -1r = 11 Divide each side by '-1'. r = -11 Simplifying r = -11
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