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Simplifying 5 + -2(r + -2) = 2r Reorder the terms: 5 + -2(-2 + r) = 2r 5 + (-2 * -2 + r * -2) = 2r 5 + (4 + -2r) = 2r Combine like terms: 5 + 4 = 9 9 + -2r = 2r Solving 9 + -2r = 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. 9 + -2r + -2r = 2r + -2r Combine like terms: -2r + -2r = -4r 9 + -4r = 2r + -2r Combine like terms: 2r + -2r = 0 9 + -4r = 0 Add '-9' to each side of the equation. 9 + -9 + -4r = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -4r = 0 + -9 -4r = 0 + -9 Combine like terms: 0 + -9 = -9 -4r = -9 Divide each side by '-4'. r = 2.25 Simplifying r = 2.25
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