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Simplifying 4r + -3.8 = 2.2 + 2r Reorder the terms: -3.8 + 4r = 2.2 + 2r Solving -3.8 + 4r = 2.2 + 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. -3.8 + 4r + -2r = 2.2 + 2r + -2r Combine like terms: 4r + -2r = 2r -3.8 + 2r = 2.2 + 2r + -2r Combine like terms: 2r + -2r = 0 -3.8 + 2r = 2.2 + 0 -3.8 + 2r = 2.2 Add '3.8' to each side of the equation. -3.8 + 3.8 + 2r = 2.2 + 3.8 Combine like terms: -3.8 + 3.8 = 0.0 0.0 + 2r = 2.2 + 3.8 2r = 2.2 + 3.8 Combine like terms: 2.2 + 3.8 = 6 2r = 6 Divide each side by '2'. r = 3 Simplifying r = 3
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