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Simplifying 3r + 7 = 1 Reorder the terms: 7 + 3r = 1 Solving 7 + 3r = 1 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 3r = 1 + -7 Combine like terms: 7 + -7 = 0 0 + 3r = 1 + -7 3r = 1 + -7 Combine like terms: 1 + -7 = -6 3r = -6 Divide each side by '3'. r = -2 Simplifying r = -2
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