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Simplifying 3r + 7 = 7r + -2 Reorder the terms: 7 + 3r = 7r + -2 Reorder the terms: 7 + 3r = -2 + 7r Solving 7 + 3r = -2 + 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. 7 + 3r + -7r = -2 + 7r + -7r Combine like terms: 3r + -7r = -4r 7 + -4r = -2 + 7r + -7r Combine like terms: 7r + -7r = 0 7 + -4r = -2 + 0 7 + -4r = -2 Add '-7' to each side of the equation. 7 + -7 + -4r = -2 + -7 Combine like terms: 7 + -7 = 0 0 + -4r = -2 + -7 -4r = -2 + -7 Combine like terms: -2 + -7 = -9 -4r = -9 Divide each side by '-4'. r = 2.25 Simplifying r = 2.25
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