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Simplifying 16 + 4r = 7r + 7 Reorder the terms: 16 + 4r = 7 + 7r Solving 16 + 4r = 7 + 7r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-7r' to each side of the equation. 16 + 4r + -7r = 7 + 7r + -7r Combine like terms: 4r + -7r = -3r 16 + -3r = 7 + 7r + -7r Combine like terms: 7r + -7r = 0 16 + -3r = 7 + 0 16 + -3r = 7 Add '-16' to each side of the equation. 16 + -16 + -3r = 7 + -16 Combine like terms: 16 + -16 = 0 0 + -3r = 7 + -16 -3r = 7 + -16 Combine like terms: 7 + -16 = -9 -3r = -9 Divide each side by '-3'. r = 3 Simplifying r = 3
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