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Simplifying 16 + 3r = -4 + 7r Solving 16 + 3r = -4 + 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 + 3r + -7r = -4 + 7r + -7r Combine like terms: 3r + -7r = -4r 16 + -4r = -4 + 7r + -7r Combine like terms: 7r + -7r = 0 16 + -4r = -4 + 0 16 + -4r = -4 Add '-16' to each side of the equation. 16 + -16 + -4r = -4 + -16 Combine like terms: 16 + -16 = 0 0 + -4r = -4 + -16 -4r = -4 + -16 Combine like terms: -4 + -16 = -20 -4r = -20 Divide each side by '-4'. r = 5 Simplifying r = 5
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