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