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Simplifying 8 = 2(r + -3) Reorder the terms: 8 = 2(-3 + r) 8 = (-3 * 2 + r * 2) 8 = (-6 + 2r) Solving 8 = -6 + 2r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-2r' to each side of the equation. 8 + -2r = -6 + 2r + -2r Combine like terms: 2r + -2r = 0 8 + -2r = -6 + 0 8 + -2r = -6 Add '-8' to each side of the equation. 8 + -8 + -2r = -6 + -8 Combine like terms: 8 + -8 = 0 0 + -2r = -6 + -8 -2r = -6 + -8 Combine like terms: -6 + -8 = -14 -2r = -14 Divide each side by '-2'. r = 7 Simplifying r = 7
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