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Simplifying 2r + 5r = 19r Combine like terms: 2r + 5r = 7r 7r = 19r Solving 7r = 19r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-19r' to each side of the equation. 7r + -19r = 19r + -19r Combine like terms: 7r + -19r = -12r -12r = 19r + -19r Combine like terms: 19r + -19r = 0 -12r = 0 Divide each side by '-12'. r = 0 Simplifying r = 0
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