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Simplifying 5r + -9 + -1 = r + 4 Reorder the terms: -9 + -1 + 5r = r + 4 Combine like terms: -9 + -1 = -10 -10 + 5r = r + 4 Reorder the terms: -10 + 5r = 4 + r Solving -10 + 5r = 4 + r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1r' to each side of the equation. -10 + 5r + -1r = 4 + r + -1r Combine like terms: 5r + -1r = 4r -10 + 4r = 4 + r + -1r Combine like terms: r + -1r = 0 -10 + 4r = 4 + 0 -10 + 4r = 4 Add '10' to each side of the equation. -10 + 10 + 4r = 4 + 10 Combine like terms: -10 + 10 = 0 0 + 4r = 4 + 10 4r = 4 + 10 Combine like terms: 4 + 10 = 14 4r = 14 Divide each side by '4'. r = 3.5 Simplifying r = 3.5
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