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Simplifying 4r + -2 = 2(r + -1) Reorder the terms: -2 + 4r = 2(r + -1) Reorder the terms: -2 + 4r = 2(-1 + r) -2 + 4r = (-1 * 2 + r * 2) -2 + 4r = (-2 + 2r) Add '2' to each side of the equation. -2 + 2 + 4r = -2 + 2 + 2r Combine like terms: -2 + 2 = 0 0 + 4r = -2 + 2 + 2r 4r = -2 + 2 + 2r Combine like terms: -2 + 2 = 0 4r = 0 + 2r 4r = 2r Solving 4r = 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. 4r + -2r = 2r + -2r Combine like terms: 4r + -2r = 2r 2r = 2r + -2r Combine like terms: 2r + -2r = 0 2r = 0 Divide each side by '2'. r = 0 Simplifying r = 0
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