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Simplifying 7(-7r + 2) = -84 Reorder the terms: 7(2 + -7r) = -84 (2 * 7 + -7r * 7) = -84 (14 + -49r) = -84 Solving 14 + -49r = -84 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + -49r = -84 + -14 Combine like terms: 14 + -14 = 0 0 + -49r = -84 + -14 -49r = -84 + -14 Combine like terms: -84 + -14 = -98 -49r = -98 Divide each side by '-49'. r = 2 Simplifying r = 2
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