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Simplifying 2r + 2 = -10 + -1r Reorder the terms: 2 + 2r = -10 + -1r Solving 2 + 2r = -10 + -1r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add 'r' to each side of the equation. 2 + 2r + r = -10 + -1r + r Combine like terms: 2r + r = 3r 2 + 3r = -10 + -1r + r Combine like terms: -1r + r = 0 2 + 3r = -10 + 0 2 + 3r = -10 Add '-2' to each side of the equation. 2 + -2 + 3r = -10 + -2 Combine like terms: 2 + -2 = 0 0 + 3r = -10 + -2 3r = -10 + -2 Combine like terms: -10 + -2 = -12 3r = -12 Divide each side by '3'. r = -4 Simplifying r = -4
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