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Simplifying 28 = -7 + -3R Solving 28 = -7 + -3R Solving for variable 'R'. Move all terms containing R to the left, all other terms to the right. Add '3R' to each side of the equation. 28 + 3R = -7 + -3R + 3R Combine like terms: -3R + 3R = 0 28 + 3R = -7 + 0 28 + 3R = -7 Add '-28' to each side of the equation. 28 + -28 + 3R = -7 + -28 Combine like terms: 28 + -28 = 0 0 + 3R = -7 + -28 3R = -7 + -28 Combine like terms: -7 + -28 = -35 3R = -35 Divide each side by '3'. R = -11.66666667 Simplifying R = -11.66666667
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